Question

When the temperature of the air increases, the speed of the molecules that make up air decreases. true or false?

Next,

_________________ can enter and leave a closed system through radiation and conduction.

A. Matter

B. Energy

C. Molecules

D. Mass
Please help, 6th grade!

Answer 1

I’m pretty sure it’s B. Energy

Answer 2

i think it’s between b, c, and d