We've been on a quest to prove that air exists. It's tricky because you can't really see it or touch it which is how we prove other things exist. So we have completed several experiments to try and prove that air: takes up space, has mass, has pressure, has volume, and that it can be compressed.
Our experiments have been wet and messy but that's totally cool because often messy learning is the best learning.
Here we were submerging a paper ball attached to the bottom of a beaker. When we pulled it out, the ball of paper was dry!!! What does that prove?
Here a bottle covered by a balloon is placed in very hot water. Slowly the balloon inflates! What does that prove?
Here we pull plungers out of syringes while covering the hole. One girl has her ears covered. Hmmmm? What's about to happen?
When air heats up it expands because the air molecules are moving faster and bouncing off each other. This causes the balloon to expand. So this shows there is air in the bottle and balloon.
ReplyDeleteWhen the beaker is placed in the water the air inside it creates pressure that does not allow water in and the paper stays dry. This proves there is air in the beaker.
ReplyDeleteWhen the plunger is pulled out more it will POP when she removes her finger because air will rush into the syringe. This is because negative air pressure is being created when the plunger is pulled out and the end of the syringe is covered.
ReplyDeleteThe pressure of the hot water makes the heat rise into the balloon
ReplyDeleteIt's going to pop cause the air is rushing in
ReplyDeleteThe syringe is going to make a popping sound because of the air running in.
ReplyDeleteThe paper won't get wet because of the air that is trapped at the top of the beaker
ReplyDeletewhen the bottle with the balloon is put in the snow the air from the balloon will deflate but when its put in the hot water it will inflate because the molecules bounce off each other quickly but put in the snow the molecules bounce off each other slower cause they are farther apart from each other then the molecules in the hot air balloon.
ReplyDelete1. it proves that air take up space
ReplyDelete2. it proves that air expands and contracts do to heat
3. the thing is about to make a loud popping noise do to the air rushing in