HYPOTHESIS:

PROCEDURE: Follow the instructions below and record your observations.

Materials: candle, match, bottle with small opening or Erlenmeyer flask

1. Light a candle.

2. Blow air into a bottle with a small opening. Use your thumb to capture the air inside.

3. Turn the small opening toward the flame and release the air. Record what happens.

4. Relight the candle, hold the bottle between you and the flame and blow. Describe what happens to the movement of the air.

Materials: hard boiled egg, bottle with opening just small enough where egg cannot get through

1. Use a peeled boiled egg, a bottle with an opening just large enough to prevent the egg from falling through, a small piece of paper and a match.

2. Set fire to a small piece of paper.

3. Place the paper into the bottle, and quickly place the egg on the top of the bottle. Then try to get the egg out.

4. Record what happens. Can you explain why?

Materials: straw, ping pong ball

1. Put straw in mouth and tip back of your head to make a vertical direction of the straw.

2. Put a ping pong ball a few cm above the straw while you blow with a steady, but forceful blow. You may have to experiment to make sure the stream of air is vertical.

3. Describe what happens.

CONCLUSION: