breathing+investigation+10

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

the small balloon inflates.

Push up on the stretched balloon. What happens inside the cup? the small balloon down sizes and collapses and deflates.

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

more.

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

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. I think that when you breath in your lungs get bigger like the balloon inside the cup. when you breath out the balloon or your lungs get smaller and collapse.

How is the air pressure similar? Paul, you have good responses for the majority of this; just make sure you always use complete sentences when answering questions for a major assignment, please.