For each of the situations below identify what remains mostly constant (unchanged)

Question

A) Temperature B) Volume or C) Pressure:
Steam is generated inside a popcorn kernel
An inflated balloon is put in a freezer
Your diaphragm expands the lungs as you breath

Answer 1

A) Temperature: Steam is generated inside a popcorn kernel. The temperature increases as steam is formed due to the heat applied.
B) Volume: An inflated balloon is put in a freezer. The volume of the balloon remains mostly constant as it is not being compressed or expanding.
C) Pressure: Your diaphragm expands the lungs as you breathe. The pressure inside the lungs increases as the diaphragm contracts and expands to allow air in and out.