Breathing+investigation+26

OBSERVE: Pull down slowly on the stretched balloon. What happens to the balloon inside the cup? The balloon blows up, and gets air in it.

Push up on the stretched balloon. What happens inside the cup? All the air get sucked out of it.

EVALUATE: Is there more or less space inside the cup when you pull down on the large balloon? There is more air in the cup when the you pull the balloon.

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

The air fills the space in the cup.

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.

It is similar to you lungs by when you are breathing in and out. Addison, you didn't really answer what was being asked.