What kind of energy is involved when ice melts a

23.What kind of energy is involved when ice melts?
a. Light energy
b. Chemical energy
c. Heat energy
d. Nuclear energy
24.When the electric fan is on and revolving, what energy changes are shown?
25.What is the change of one form of energy into another? 26._______________ is the abnormal rise in the earth’s temperature.

27.Why can a bus travel faster in going down a mountain than in going up?
a. Because of gravity
b. Because of air pressure
c. Because of friction
d. Because of the speed of wind.
28.Which of the following explains the law of inertia?
29.What does a speed limit of 80 km/ hr mean?
30.Which of the following explains the second law of motion? 31.Some scientists believe that the universe started as a hot ball of materials
which exploded and became stars and galaxies. What is this theory?
a. Steady-state theory
b. Big bang Theory
c. Pulsating theory
d. B and C
32.What forms/form part of a constellation? 33.Which theory explains that the earth is made up of major plates that once
joined like a
jigsaw Puzzle.
34.It is believed to be made of solid materials. It has a diameter of about 2, 560 to
2, 880 kilometers.