C
They are moving farther and farther apart, which is what expands the tire.
When you pump a bicycle tire, what is happening to the particles inside the tire?
A
Nothing, because pumping in more air does not affect the particles inside.
B
They are moving closer together and contracting, filling the tire and making it more firm.
C
They are moving farther and farther apart, which is what expands the tire.
D
They are moving faster and faster, making the tire feel more full.
1 answer