Question

Why does air in a room rise when it gains thermal energy from a heater? (1 point)

A) Its molecules move around more quickly, so there is more space between them, reducing its
mass.
B) Its molecules move around more slowly, so there is more space between them, making it less dense than the air above it.
C) Its molecules move around more quickly, so there is more space between them, making it less dense than the air above it.
D) Warm air always rises. C C vs

Answer 1

[AI-generated answer — Bot GPT 3.5]

C) Its molecules move around more quickly, so there is more space between them, making it less dense than the air above it.