A Yellow Submarine
How do submarines dive under the water and rise to the surface
again? Make your own submarine to find out.
Here’s what you’ll need:
glass jar
large balloon
fresh lemon
scissors
rubber band
water
Here’s what to do:
1.
With the help of an adult, cut a piece of lemon
peel into the shape of a submarine.
2.
Fill the jar with water. Put the lemon peel
submarine in the water.
3.
Cut a circle from the balloon. Stretch it over
the top of the jar. Hold the balloon in place
with the rubber band.
4.
Press hard on the balloon. What happens to
your submarine?
5.
Take your finger off the balloon.
What happens to your submarine now?
6.
Can you explain why this happens? What does
this tell you about how submarines dive under
the water and rise to the surface again?
Name _______________________________________________________________
112
Dostları ilə paylaş: