ExpAIRiments
Stations
1. You will need a straw. When you suck through a straw, you lower the pressure of the air in your mouth and in the straw. The air pushing down on the surface of your drink in the cup forces the liquid up the straw.
2. You'll need two pieces of paper. Hold them in front of your face and try to blow them apart. What happens? Why did that happen? Where is the low pressure?
3. You'll need a straw. Stick it in a glass of water. Blow across the top of the straw. What happens? Why?
4. You'll need a candle and bottle (1L size or so). Light the candle and place it on the table. Place the bottle in front of the candle. Blow from behind the bottle toward the candle. What happens? Why?
5. Place the cup or jar in the water. Fill the cup with water and turn it over so the open end does not go above the water. Pull the cup straight up. What do you notice? What happens? Why?
6. Carefully use the air cannon to move the object (the cup). What does this demonstrate about air?
7. These pieces are similar to the hemispheres that von Guerke used. Are they easy to separate? What makes them stick to each other? What do you have to do to release them?
8. Do in school. Video.
9. Put the empty soda cans about one inch apart on a smooth, level surface. Predict what will happen if you blow gently between the cans.
10. Use the hair dryer on high, but press the COOL button to keep the air cool. Use it to keep the ping pong ball in the air. How far can you tilt it without having it fall? Draw what is happening and label where the high pressure and low pressure are located.
1. You will need a straw. When you suck through a straw, you lower the pressure of the air in your mouth and in the straw. The air pushing down on the surface of your drink in the cup forces the liquid up the straw.
- Try this: Make at small hole in the straw about 2 inches from the top end and try to drink through the straw. What happens? Why?
2. You'll need two pieces of paper. Hold them in front of your face and try to blow them apart. What happens? Why did that happen? Where is the low pressure?
3. You'll need a straw. Stick it in a glass of water. Blow across the top of the straw. What happens? Why?
4. You'll need a candle and bottle (1L size or so). Light the candle and place it on the table. Place the bottle in front of the candle. Blow from behind the bottle toward the candle. What happens? Why?
5. Place the cup or jar in the water. Fill the cup with water and turn it over so the open end does not go above the water. Pull the cup straight up. What do you notice? What happens? Why?
6. Carefully use the air cannon to move the object (the cup). What does this demonstrate about air?
7. These pieces are similar to the hemispheres that von Guerke used. Are they easy to separate? What makes them stick to each other? What do you have to do to release them?
8. Do in school. Video.
9. Put the empty soda cans about one inch apart on a smooth, level surface. Predict what will happen if you blow gently between the cans.
- Bernoulli's Principle states that moving air exerts less pressure. The air between the cans is moving and exerting less pressure than the air on the far side of the cans. Thus, the pressure is greater on the far side of the cans so they are pushed together.
- Create a drawing that demonstrates what happened.
10. Use the hair dryer on high, but press the COOL button to keep the air cool. Use it to keep the ping pong ball in the air. How far can you tilt it without having it fall? Draw what is happening and label where the high pressure and low pressure are located.