The+breathing+system

OBSERVE: Pull down slowly on the stretched balloon. What happens to the balloon inside the cup?

Push up on the stretched balloon. What happens inside the cup?
 * 1) the balloon fills up with air Can you think of a scientific term for this?

2. the balloon deflates

EVALUATE: Is there more or less space inside the cup when you pull down on the large balloon?

3. more space

IDENTIFY: When you pull the large balloon down, what fills the extra space in the cup?

4. air

COMPARE: How is the air pressure in the balloon similar to the air pressure in your lungs? Write down what you think happens when you breathe air into your lungs.

its like when you pull the large ballon down its like the diarpham. Jacob, you haven't really answered the questions. Think more deeply; this isn't an obvious answer.