Dropping Marbles -A Crater Experiment

By definition a crate is a large, bowl-shaped cavity in the ground or on the surface of a

planet or the moon caused by an explosion, the impact of a meteorite, etc. Even though this

definition slightly explains the occurrence of a meteorite, through this lab we went through

this thoroughly. We took a tub and filled with a few centimeters of flour. We then got a

meter stick and a marble. We would hold the marble up at a certain height and then drop it,

after the marble fell it would make a crater we then made recording and observations about

this. Above are graphs made out of our observations, looking at the graph now I see that our

data looks a little strange, with big drops and rises. Even though I think our data is not the

most reliable there are observations I made that are interesting. One thing I noticed during this

experiment was that the higher the marble was held, when it dropped it would actually

bounce and create a brand new crater! In conclusion, I found that what effects a crater is the

distance, speed, weight and angle that change the appearance of the crater.

Further Inquiry:

Additional tests I would like to try would be things such as, using different materials as craters

or throwing "meteorites" into different materials. This would be interesting to see how the

different materials react to each other.

Note: The graph is turned into the average of three tests.

End Of Year "Reflection"

What were some of the things that you will never forget from science class?

- Something I will never forget about science class is when we had the irradiated food debate, the reason this was the most memorable, was because I like debate and it was a interesting way to talk about a scientific topic while combining it with something I enjoyed.

What was your favorite unit?

- My favorite unit was the space unit. It was my favorite unit because space is something that interests me so being able to learn something that interests me definitely made the whole unit more enjoyable.

What was your least favorite unit?

- My least favorite unit was the waves unit, not because we didn't do anything interesting, or any good projects, it was merely because waves did not interest me as much. Since they did not interest me as much I did not really enjoy this unit.

What was your favorite project?

- My favorite project was when we had to take our house and make it earthquake proof. This was fun and influential, because in my additions or improvement to my house I had written down, survival kit or emergency kit. This was actually something we made and put in our house just in case. This project was fun because I got to draw the inside of my house.

What was your least favorite project?

- My least favorite project this year was probably when we had to make the light spectrum, this was because it was mostly just typing and printing out materials which was not very interactive.

What were some helpful things this year?

-Some helpful material this year was something is particular that stuck in my mind and it was the Prezi presentation in the beginning of the year. It was just a really well done presentation so I found that really helpful.

What are some of your goals for next year?

- Some of my goals for next year are to understand waves better, the reason is because this unit I didn't really fully understand them. Also, I want to try my hardest on a unit even if it is not as interesting as another unit, because all in all it still counts.

What are some improvements for the teaching of next years 7th graders?

- I only have one improvement and that is through this year we accomplished a lot, but it felt slightly open-ended, of next year I think there should be a big, memorable project just to either start or wrap up the year because those usually challenge the students but are really fun!

Current Events 5/25/2011

Science 7A Black Holes spin faster and faster 5/26/2011

In the U.K, two astronomers have discovered that the giant black holes in the center of the galaxies are on a average spinning faster than any black holes in history of the universe. By using radio, optical, and x-ray data. According to evidence, it is strongly believed that there is a black hole in the center of every universe. these holes are about the size or a million and a billion suns, and since they are so huge they are called, "supermassive". The the naked eye a black hole would be invisible, but when the material that get sucked into the black hole, they are heated and once they become hot they emit radiation. The radiation they emit allows the black hole to be detected to telescope. Radiation is not the only thing associated with black holes, twin jets are as well. These jets can be caused a variety of ways, yet scientists believe that a spinning "supermassive " black hole is important. Two scientists, Martinez-Sansigre and Rawlings used models, made by using many different materials, they discovered different, plausible theories. Using radios, the astronomers were able to deduce the jet's power and the spread of it, using this information they could figure out how fast the black hole was spinning. The observations from the astrologers also tell us how the spinning speed has evolved. Long ago, when the universe was smaller, the spinning rate of the black hole was low, yet now the average of a black holes spinning rate has gone up. Being the first time that the evolution of the spinning of a black hole has been constrained, this gives the impression that the black holes that fall under the very stereotypical cateogry of simply sucking things out of space actually spin slower or actually barely spin compared to black holes that merge with other black holes, which spin very fast. In conclusion, the way a black hole spins can tell you a lot about their evolution, and through tests and observations, astronomers have concluded that recently massive black holes have been springing up, and the most logical explanation is that two black holes, both of similar mass, combine to make an even faster spinning black hole.

This effects scientific knowledge, because we are adding to what we already know about our surroundings. There is so much unknown around us, and with small discoveries like these we are slowly learning more about our universe. The benefits of science in this news, would be that we have the tools to conduct these experiments. Otherwise it would be impossible to carry out these experiments. When I first heard about this happening, I didn't really expect much but I found it to be a really cool article that was very interesting.

I chose this article because I thought it fell under the category of the unit we are studying, and it would be interesting to read. What grabbed attention about this article was probably the fact it was about black holes, you don't much about that particular topic anymore. I found this article while searching for current events in science. I learnt about the evolution of black holes from this article. While reading this next I felt, intrigued, because it was liking making a new discovery.

Royal Astronomical Society "Black Hole Spin Faster and Faster." Astronomy Today. 24 May 2011. Web. 29 May 2011. .

Everything about Eclipses

ABOUT ECLIPSES

What causes an eclipse to occur?
- Eclipses occur when the moon and the sun and earth are all aligned (different eclipses occur because of the different alignment), there are 2 types of eclipses, lunar and solar.

What is a lunar eclipse and a solar eclipse?

- A lunar eclipse is when the moon passes through the shadow of the earth, making the sun and moon on opposite sides. A solar eclipse is more spectacular, and it is when the moon passes directly between the sun and the earth, blocking the sun from view.

Which type of eclipse is more common?

- A lunar eclipse is more common than a solar eclipse because with a solar eclipse the moon's shadow only covers a small portion of the earth, while the during a lunar eclipse the shadow is cast over a wider part of the earth.

What are the dangers of viewing an eclipse?

- With a lunar eclipse there are really no dangers of viewing the eclipse, yet with a solar eclipse the sun radiation can cause harm to your eyes, and can even cause partial of total blindness.

When is the next eclipse occurring?

- According to the eclipse section on the NASA site, there should not be a full solar eclipse for a while, but there are a few other happenings. June 1st there should be a partial solar eclipse, June 15th there should be a total lunar eclipse, on July 1st and November 25th there should be partial solar eclipse, and last on the site December 10th there should be a total lunar eclipse.

THE MOON

When investigating the simulation, the moon clock, and/or the model, what did you notice about the phases of the moon?
- The phases of the moon change depending on the position of the sun, depending on the moon. When the sunlight reaches the moon it then is reflected, making the moon appear illuminated. The parts that do not get sunlight appear as shadow and are not visible.

Why do we see different parts of the moon each night?
- As I explained above, we see different parts, because different parts of the moon's face are illuminated.

How well did making a model help you understand the phases of the moon?
- The model helped me understand the phases of the moon by labeling them and telling me the names. It helped me understand the different phases the moon goes through while getting from full moon to full moon.

What are some disadvantages of using models?
- The model doesn't really give that much of a realistic view it mainly just explains the phases of the moon but doesn't really show us how the moon makes it way around the earth, this is why I found the simulation much better because you could really visualize it.

Scientists are thinking all the time about how they can make models of objects that are too small or too large to see: Can you think of another way to make a model to represent the various phases of the moon?
- I think something that would be cool, would to have a sun, which would radiate light from a bulb in the middle. Then using a magnetic pull (just like those globes the levitate in the air using magnets) I would make it so that not only can you see the phases of the moon as it revolves around earth but you can also she how.

What causes an eclipse to occur?
- Eclipses occur when the moon and the sun and earth are all aligned, there are 2 types of eclipses, lunar and solar. A lunar eclipse is when the moon passes through the shadow of the earth, making the sun and moon on opposite sides. A solar eclipse is more spectacular, and it is when the moon passes directly between the sun and the earth, blocking the sun from view.

How do the moon, sun and Earth interact to cause so many things to occur?

- Well the earth revolves around the sun, the sun being the things that gives life to our planet. The moon revolves around the earth, giving us tides and spectacular scenes, such as an eclipse. This is all interconnected into a delicate balance so that everything works to together. The sun and the earth, the earth and the moon, giving us things that we live with everyday.

What causes a tide?

- A tide occurs because of the gravitational forces and field of the earth and the sun, as well of the centrifugal force from the earth's rotating. When the placement of all the planets or celestial bodies change then so the the height of the surface. So when earth, sun and the oon are aligned water levels are pulled and then they rise.

Moon Post

What did you notice about the phases of the moon?

Why do we see different parts of the moon each night?

What is a lunar month?

1. 
   
2. Something I noticed about the phases of the moon is that it changes when you are looking at it from earth to when you are looking at it from space. This is because looking at the moon from earth you can only see on side of it. So you see the shadow slowly edging from the side. The different phases of the moon are more noticeable from earth than from space, from space it all looks the same.
3. 
4. We see different parts of the moon each night because of the fact that the moon revolves around the earth and the sunlight shines on the moon making some parts of the moon have a bigger shadow then the other part.
5. A lunar month is the period of time between one full moon till the other.

What do I want to know?

In this unit we are doing astronomy. In astronomy there are many different subject to cover, but some I think would be very interesting to know about include:

1. Our Solar System - Maybe more in-depth not just what planets there are,etc.
2. Milky Way
3. Stars - Stages they go through, types, birth, death,etc.
4. History of Astronomy
5. Space Travel

There are so many other topics in astronomy but I think these are interesting topics that we should maybe take a look at.

Seasons Lab

Reasons for the Seasons

When it is winter in the Northern Hemisphere, which areas on Earth get the most concentrated light? Which areas get the most concentrated light when it is summer in the Northern Hemisphere?

When it is winter in the Northern Hemisphere, the Northern Hemisphere is getting less light. So the area with more concentrated light is the Southern Hemisphere. So it is also vice versa, if the Northern Hemisphere has all the concentrated light the Southern Hemisphere will have less light.

Compare your observations of how the light hits the area halfway between the equator and the North Pole during winter and during summer.

During the winter the light in less focused on the area between the equator and North Pole, while in the summer the earth is tilted more towards the dun in a way so the light is more concentrated on the area between the equator and the North Pole.

If the squares projected on the ball from the acetate become larger, what can you infer about the amount of heat distributed in each square?

It probably spreads out over the small area of like the light, becoming larger, the heat becomes hotter. Yet maybe since the heat is being spread out the little area actually gets less hot because the heat isn't as concentrated.

According to you observations, which areas on Earth are consistently coolest? Which areas are consistently coolest? Why?

The warmest area is the area around the equator; this area is always warm because it always has direct sunlight, while the pole areas are probably the coolest areas because they don’t get much sunlight and if they do it is very short and not enough for it to warm up the country.

What time of year will the toothpick’s shadow be longest? When will the shadow be shortest?

I think that the toothpick’s shadow will be the longest in the summer and in the winter it will be the shortest, this is because in the summer the toothpick is closer to the sun making a longer shadow. Yet in the winter the toothpick in further away making am shorter shadow.

How are the amounts of heat and light received in a square related to the angel of the sun’s rays?

The closer the direct sunlight the more heat and light is received in one square, if the angle is pointing downwards the direct sunlight will be down making the part the brightest and the hottest and other surrounding parts will be dimmer and less hot.

Use your observations of an Earth-sun model to write an explanation of what causes the seasons.

The seasons are caused when the earth tilt’s on its axis toward or away from the sun on its rotational path.

The guiding question is this lab was, How does the tilt of the Earth's axis affect the light received by Earth as it revolves around the sun?

Our hypothesis for this “mini-lab” was, I think that seasons are caused because sometimes some parts of the earth of recieve more sunlight than another parts, making that part warmer than another.The hypothesis was not techinically right but some of the ideas worked, and I think it was an educated guess. This is becuse sometimes the earth does recieve more sunlight than another part of the earth making it lighter and hotter.

How does the use and study of waves affect societal well-being?: Waves Unit Reflection

Through this unit we learned about different kinds of waves in the mind map below it shows the topics we covered:

How does the use and study of waves affect societal well-being?

The use and study of waves affect societal well-being because they are all around us. If we did not know about them we wouldn't know their impacts, uses and dangers. It is always important to learn about our surroundings and since waves, as I said before, are all around us they are important to know about. Without learning about waves we wouldn't be able to use them, which would be unfortunate because waves have many uses. Through this unit we learned a lot about the different types of waves, their uses, their dangers and what they are.

What are waves?

A wave is a disturbance that travels through a medium from one place to another. What is a medium? A medium is a material that a wave travels through and it is not to be confused with matter. When a wave travels in transfers energy from one location to another. A wave is caused when a disturbance causes particles to move.

Nature of Waves

Through this unit we learned a lot about the traits and parts of waves. The top or highest point of a wave is called the crest and the lowest point is called the through. The length between each wave is the wavelength and the height of the wave is called the amplitude. Along with this the amount of waves that come by in a certain period of time is the frequency. We also learned that elasticity, density and temperature effect the speed and other characteristics of a wave.

Types of waves

Another thing we learnt about is the types of waves. These include:

Longitudinal Waves - A wave in which the particles move in a parallel direction to the wave.

Transverse Waves - In which the particles move perpendicular to the direction of the wave.

Seismic Waves - When a rock is under great stress and then it breaks, this is the type of wave it emits.

Primary Waves- A wave that can travel through solids and liquids.

Surface Waves - A wave in which the particles of the medium move is a circular motion.

Secondary Waves - A wave that can travel through solids but not liquids.

Mechanical Waves - A wave that needs a medium to travel.

Electromagnetic Waves - Waves that do not need a medium to travel through, electromagnetic waves include x-rays, infrared, UV, etc.

Sound Waves - A wave made up of compression and rarefactions in which sound is transferred from one place to another.

Interactions of waves

Waves interact in different ways creating a stronger wave, a weaker wave or a wave that is simply the same. Some interactions of waves include anitnodes and nodes, rarefaction, resonance , diffraction, and interference (constructive and destructive). These types of interactions of waves can happen between water waves and sound waves.

What have I learnt during this unit?

A learnt a lot about different kinds of waves, interactions of waves, uses of waves (infrared waves such as cooking, Sound waves for music), dangers of waves (earthquakes, tsunamis, etc.), nature of waves, and what waves are.

What did I like?

Through this unit my favorite thing was the seismograph lab, this was because we got to be creative and to build a seismograph. This lab was to show us the importance of a seismograph (which is to be able to predict an earthquake to prevent disaster). I think though the reason I enjoyed this project so much was because it was quite a creative lab.

What would I change for next year's 7th grade?

I would change the fact that we go very in depth with water waves and ground waves but not as in depth with sound and light waves. So maybe going more in depth with these two categories would be good so we could fully understand waves as a whole.

This is a video covering a certain part of this unit I found interesting (characteristics of waves)

Food Irradiation

A brief introduction to irradiation:

Discussing about food irradiation was interesting because it was a topic that had an equal amount of pros and cons, so arguments were quite hard to find. It was cool to see the points that people had and the research they had gathered, and the arguments they presented. I was in a group with Emily, Jovana and Riena. Together Emily and I debated with Jovana and Riena, we were supporting food irradiation while Jovana and Riena were against it. After debating our conclusion was that food irradiation was something that should not be encouraged but it should not be banned either, it is simply a step to a bigger, better and more beneficial alternative.

So know if I was faced with the choice to either pick irradiated food or non-irradiated food, I would probably pick non-irradiated food that is organic. This would be my choice because I think anything that passes radiation through your food is not really good for you, but then again if farmers in chain food-industries don't use irradiation they probably use other things like pesticides. So I would rather buy non-irradiated food from a local farmer or grower. Yet what are some of the pro's and cons of irradiating food?

FOOD IRRADIATION PROS AND CONS

Pros

Cons

· Irradiation kills up to 90-99% of the dangerous bacteria in your food · Can kill pests and insects without leaving chemical residue · Can make food sterile allowing people such as AIDS patients to eat irradiated foods · Has been deemed safe by several government agencies · Can allow food to be stored longer · Longer shelf life · Claimed okay for the environment because radioactive materials are fully enclosed and returned to the creator or disposed of · Doesn’t kill more nutrients than a conventional oven does

· Might not kill all the bacteria and the bacteria that is not destroyed supposedly comes back stronger and even harder to kill · The levels that are allowed to be used do not kill viruses · Can only be used on a limited number of foods · Approve irradiation in food as flawed · Not enough known about the potential health effects · Accidents by people handling radioactive material is possible · If irradiation was to go mainstream more factories would have to be built and the risk of accidents would go up

Noise Pollution

What is noise pollution? Noise pollution is not technically pollution such as air pollution, which contaminates our air and then has a knock on effect towards global warming. It may not be a really pollution technically but it is still very bothersome and has negative effects. So what is it really? Noise pollution are sounds that are very irritating but are usually created by people, animals or machine (kinds of sources include all transportation systems, factories, audio entertainment systems, probably anywhere that has a device that gives of loud sound) .

Noise is measured in decibels (db). Humans can hear sounds from 20 to 20,000 decibels. Noise under 20 decibels is called infrasonic, and sounds above 20,000 are called ultrasonic. Yet a sound over 90 decibels can do damage to hearing and can be painful to the ear. This table show relatively the relation between actual sounds and decibels:

So when you watch the video below and you see that the average sound height in Mumbai is about 80 decibels, which is like a cell phone ringing repeatedly, it is easy to understand how it can be bothersome and effects can be sometimes worse then they are thought to be.

This can affect people hearing and can be very displeasing to live in an area with noise pollution. It is something that is prevalent around the globe, especially in urban areas. Yet some people only think of its effects on people, but noise pollution can affect many different kinds of organisms in many different habitats. For example, noise pollution from a boat may affect some animals under the sea, or if machines are digging into the ground this can disturb animals that burrow under the ground. There are a few different levels of noise pollution kinds that can damage mental and physical health and then a level that doesn't really affect the health of the person but is simply very bothersome.

So what are the in-depth effects of noise pollution? One effect is human health; noise pollution disturbs human health in a number of ways. Some of the effects include deafness (from extreme noise pollution), lack of sleep, irritably, indigestion, heartburn, and high blood pressure. Usually one short explosive sound can alter the neurological and cardiovascular system. So imagine if this kind of noise is is over a longer period of time, this can then do more severe damage.

Another effect of noise pollution is annoyance, there is no doubt about it noise pollution is definitely annoying. The level of the noise definitely decides how annoying the noise is. Also we tend to find natural sounds to be much less frustrating then those that are not able to be controlled , an example is that rain falling can be less frustrating then water dripping from a tap. This is probably the most annoying of all the effects, sleep interference. Noise pollution can cause people that are sleeping to wake up or not be able to go to sleep. Not being able to sleep can disturb the sleep pattern of the person making the cranky and tired the next day.

Last but not least noise pollution can make the performance of the person decrease. When there is noise pollution it can affect the concentration and accuracy of the person, making their performance in work go down. Sometimes this can cause the person to have an accident because he/she was not able to pay attention or concentrate. So how can you avoid the possibility of living in an area with noise pollution? Find an area away from a busy highways, intersection, road shopping centers or sporting areas. If your neighbor is a dog owner make sure you know how much their dog barks. Make sure when buying a home it is not close to any airports and places where aircrafts land or take off.

Noise pollution can sometimes be resolved by communicating, so if it is a neighbor who is simply playing music to loud voice your concern. Probably one thing that would make people who are hard of hearing and deaf feel more accepted is attempting to communicate with them. Here are some tips:

Choose a quiet environment, not one that has a lot of noise.

Try to avoid standing in front of a light source when you are speak, instead stand so the light is shining on your face, this makes your face easier to see.

Allow the person to choose their seat first.

Make sure you have the person’s attention before you start.

Stand a normal distance from the person.

Maintain eye contact.

Make sure the topic is clear before starting.

Use open ended questions to check understanding.

Use facial expressions, body posture and gestures to help with communicating.

Communicating is very tiring for people with hearing loss or who are deaf so do not tire the person out.

There are also people who campaign against sound pollution, and there are a few websites about this to. One is http://www.noiseoff.org/ this organization talks about noise pollution in different states in the U.S and a few other countries around the world. As an organization they work towards trying to pass laws that will restrict amounts of noise pollutions. Such as certain caps on motorcycle engines that allow the sound to be muffled. This organization does a lot of work with the people of India, because there is a big problem with noise pollution there as seen in the video below. They are creating posters creating awareness about noise pollution and efforts to get rid of it. You are able to print these posters and are encouraged to put them up if your local neighborhood is having trouble with noise pollution, the posters come in both English and Hindi.

If you have already purchased a house or live in an area where noise pollution is evident you can sometimes buy gadgets that can block out the sound, these things can include soundproofing foam, this foam absorbs the sound not letting the sound reach your ears. This is handy to put up if there is noise pollution that is very irritating. Earplugs can be used as a short term fix, maybe if you need to fall asleep, they simply slightly block out the sound decreasing it's amplitude. I have personally experienced noise pollution first hand. In the area I live in there is often noise pollution thanks to our neighbors. They often play loud music at night or drive cars really fast around our block, so I can definitely say it is annoying. Yet we are lucky since it only happens once in awhile and not frequently.

Noise pollution is harmful to both humans and animals, and it is very annoying. Though it is not a full blown pollution it definitely has it bad effects. Noise pollution is something we could all do without.

http://www.youtube.com/watch?v=-zxNVWI2kNE

BIBLIOGRAPHY:

"Noise Pollution, Effects of Noise Pollution, How to Reduce Noise Pollutions." Global Warming, Fossil Fuels, Energy Resources, Environmental Issues. Geogise, 2006. Web. 28 Mar. 2011. .#

"Communication Tips - E-Michigan Deaf and Hard of Hearing." E-Michigan Deaf and Hard of Hearing People. SBC Ameritech, 2002. Web. 28 Mar. 2011. .

"What Is Noise Pollution?" WiseGEEK: Clear Answers for Common Questions. Wisegeek, 2011. Web. 28 Mar. 2011. .

Guiding Question:

How does density of various solids affect the way the sound waves travel from the tuning fork?

Hypothesis:

I believe that the denser the material is the longer it will take to travel for you to hear, making the sound softer and much shorter.

Materials:

· A 426.6 A tuning fork

· A 256 C tuning fork

· A whiteboard

· A locker

· A desk

· A cement wall

· A notebook

Procedure:

1. First you must take your two tuning forks.

2. Find the first material you will be observing.

3. Tap the 426.6 A tuning fork onto the material and the press the round, flat end against it.

4. Listen closely to the sound.

5. Observe what you hear.

6. Do this with all the other materials.

7. Repeat steps 2-6 but with the 256 C tuning fork.

Material	Density	Loudness with 426.6 A tuning fork	Length with 426.6 A tuning fork	Loudness with 256 C tuning fork	Length with 256 C tuning fork
Locker	7.85 g/cm3	Really loud and very sharp, it hurts your ears	Lasts for about 30 seconds.	Not as loud as the other fork, doesn’t hurt your ears.	Lasts for about 24 seconds
Whiteboard	2.8 g/cm3	Loud same as locker	Lasts for about 17 seconds.	Also much quieter and lower.	Lasts for about 14 seconds.
Desk	0.75 g/cm3	Much louder and hallow song it is deeper. You can hear it without having to put your ear near the fork	Lasts for 15 seconds	You have to actually put your ear to the fork to hear the sound and listen intently	Lasts for about 11 seconds
Wall	3.12 g/cm3	Quieter than other materials you have to listen closely	Lasts 16 seconds	Much quieter you can almost not hear the sound but you can feel the vibrations.	Lasts 15 seconds

RECORD & ANALYZE: Looking at the data pattern I can see is that the denser the material makes it louder and longer. I can see this because all the dense materials are very loud and the sound is longer. You can see that the locker is very dense and then the sound is loud and quiet. Yet the desk was the least dense out of all the materials so it had the quietest sound and lasted the least.

Conclusion: So does the density of a material affect the length of the sound and the loudness of the sound. From the data that I found I can conclude that the denser a material is the louder and longer the sound is. So if this is true that the less dense a material is the quieter it will be and the shorter it will last. The variable in this project was the material and the tuning fork. We changed these things to test the how density effects the loudness and the length. The prediction I made was actually incorrect because the denser the material the louder and lengthier the sound. Yet I said that the denser the material the softer and shorter the sound will be. This lab taught me more about sound and the way density effects sound. From now on I will understand why when I tap on wood compared to when I tap on a locker the difference.

Further Inquiry: I think the biggest cause of error in my data would probably be that when I was listening to the tuning fork I miscounted the seconds or I might have accidently hit the fork a little harder during one test than another. Maybe next time I could possibly use a timer to count how long the tuning fork rings. Maybe I could have something that would hit the fork exactly on point every time. Next time I think I actually will use a stopwatch to record how long the sound lasts. To further continue this experiment, one area that I could elaborate one would probably be how the length or size of the tuning fork changes the sound. From what I found in the experiment it changes the pitch yet I would like to try this experiment with a wider variety of tuning forks.

Check out the video below to see a tuning forks vibrations and sound:

http://www.youtube.com/watch?v=3m4ztrpmX-s