Human+body

OBSERVE: Pull down slowly on the stretched balloon. What happens to the balloon inside the cup? The small balloon fills up with air. Push up on the stretched balloon. What happens inside the cup? The balloon that had air deflates.

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

IDENTIFY: When you pull the large balloon down, what fills the extra space in the cup? Just space because there is a balloon under the straw so the space can not fill up with 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. It the same because when you pull down it fills up with air and thats the same with lungs, when you breath in your diaphragm can expad when you need more room and that the same with the balloon. I think that your lungs are kind of like a balloon because it can expad whenyou blow into it then when you let go it all come rushing out because it has no cap to keep it closed. The air can go into the lung then if you need more room your diaphragm can expad to make more roomwhenyou breath in deep or are out of breath but then it goes back to shape and can make easier to do thing like doing a triathalon and it can speed up or slow down like when you sleep if you kept breathing hard while you sleep you could sufacate because you asleep and dont need a ton of air.

Good job, Kay. I would encourage you to borrow one of the models and repeat the EVALUATE and IDENTIFY steps. Rethink your answers after making multiple observations. Can an empty space be filled with __nothing__? You put a lot of effort into the last question. Nice.