I need a idea for my science fair ,please help me (in english)ple_其他解答

I need a idea for my science fair ,please help me (in english)
please help me to think of a project
it can be about anything

人气：208 ℃　时间：2019-09-29 04:12:52

解答

make a food volcano.
use difference of the pressure when heating up.
Google it.