invesagation

OBSERVE: Pull down slowly on the stretched balloon. What happens to the balloon inside the cup? The balloon inside inflats a little then deflats when you pull on the streched balloon because it has more room to inflate because of air preessure.

Push up on the stretched balloon. What happens inside the cup? It deflates more than it was when the strched balloon was relaxed because it the air in there needs more room so it squeezes it.

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

there is more room when you pull down on the streched because of the aire pressure.

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

the gas that fills the cup when you do that is oxegen

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. the air pressure is simialr to the air presure in your lung because your lungs expand when you breath in and the contrast when you exal. I think that your lungs expand when you inhal because of air presure