Science+Investigation+Question+Unit+2

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

The balloon in the cup inflates lightly and blows air out of the cup


 * //__Maddie, I would encourage you to borrow one of the models and repeat this step and your observations. If the balloon is inflating, can air be blowing out of the cup at the same time? Isn't there only one entrance/exit into the cup?__//**

Push up on the stretched balloon. What happens inside the cup? When you push up against the baloon the balloon deflates and pushes air out of the cup blows out air.

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

IDENTIFY: When you pull the large balloon down, what fills the extra space in the cup? Nothing fills the extra space it just changes the pressure in the cup.


 * //__Think more deeply about this response. Can NOTHING fill up extra space?__//**

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 the same process happens in your lungs. When your diaphragm detracts it changes the pressure and make you breath


 * //__When you say it makes you breathe, do you mean inhale or exhale? The vocabulary word you are searching for is contracts rather than detracts. Detracts means to take away from; to lessen.__//**