1. Constant speed means the speed
a) changes
b) stays the same
c) is variable

B. Stays the same

Explanation:

When the speed is constant, it means that the speed will stay in its position without moving to another speed. In other words, it would stay the same.

if you're asking what comes out, it's steam.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock