SUPER COOL EXPERIMENTS


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 Try creating your own musical instrument using a few simple items from around your home!

Experiment Title Materials
(What You Will Need)		 Procedure (What You Do)

BOTTLE PIPES

1. food colouring
2. water
3. six narrow-necked glass bottles

1. Set up all of the bottles in a line.
2. Pour different amounts of water into each bottle.
3. Add food colouring to the water to see the water levels easier.
4. Blow gently across the top of each bottle.

Challenges for the Scientist!

1. Repeat the experiment with the bottles set up in order from lowest level of water to highest level.
    What happens?
2. Try changing the levels of water. What happens?
3. Sound is caused by vibrations. What is vibrating in this experiment?

   How it works

Blowing across the tops of the bottles causes the air inside to vibrate. Short columns of air vibrate much faster then long columns of air. As a result, the bottles with short columns of air make high notes and the bottles with long columns of air make low notes. A pipe organ works just like this! When the organ is played, air blows over the holes in each pipe. This makes the column of air to vibrate and make a note! Neat Huh?
 

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 Try creating your own camera to see how light travels!

Experiment Title Materials
(What You Will Need)		 Procedure (What You Do)

PIN HOLE
CAMERA

1. an empty box
2. tracing paper
3. tape
4. a pin
5. scissors
6. black paint
7. dark towel
8. thick brown paper

1. Cut the ends off the box.
2. Paint the inside of the box black.
3. Tape a piece of tracing paper over one end of the box.
4. Tape a piece of brown paper over the other end.
5. With the pin, make a small round hole in the middle of the brown paper.
6. Use the dark towel to cover your head and the tracing paper end of the box.
7. Aim the camera at a window and look at the tracing paper from about 6 inches away.

Challenges for the Scientist

1. Make a diagram of what you see in your pin hole camera.
2. Light travels in straight lines and cannot bend around things. Tell why this helps to explain what you saw.

How it works

Light from the top of the window travels in a straight line through the hole to the bottom of the tracing paper. At the same time, light from the bottom of the window travels in a straight line through the hold to the top of the tracing paper. So the picture you see is... UPSIDE DOWN!

 

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