Arrange the steps to describe what happens to a liquid when its heated.
a. the particles of liquid move faster
b. the liquid changes to a gas
c. liquid gains thermal energy
d. the space between the liquid particles increases

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?