2. When an object absorbs light rays, how is the energy held in the object?
(a) As heat.
(b) As kinetic energy.
(c) As inertial energy.
(d) There is no energy involved.

3. Under normal circumstances, what force(s) does a molecule possess?
(a) The force to overcome inertia.
(b) The force of electron splitting.
(c) The force of energy times matter.
(d) An attracting force and a repelling force.

4. What are large fins which adjust their tilt to compensate for waves?
(a) Stabilizers.
(b) Fans.
(c) Rotaries.
(d) Screws.

5. What is the effort you put in combined with the distance over which the effort is done?
(a) Mendal's law.
(b) Work.
(c) Gravity.
(d) Rest.

6. What are the effects of electricity?
(a) Heat, light, and magnetism.
(b) It depends on the amperage.
(c) Only magnetism.
(d) Only light.

7. In how many elements did the Greek believe?
(a) Four.
(b) Seven.
(c) Eight.
(d) Three.

8. Upon what principle does a pulley work?
(a) The amount of work required is halved by the amount of effort.
(b) The rotation of one gear pulls the other.
(c) It is easier to pull something down rather than up.
(d) It is easier to overcome gravity than force.

9. What is the term for the process of molecules moving further apart in convection?
(a) Inference.
(b) Trajection.
(c) Acceleration.
(d) Expansion.

10. What debris does a nuclear explosion create?
(a) Acid rain.
(b) Fallout.
(c) Steam.
(d) None.

11. What are two things that can happen to light rays?
(a) They can be dissolved.
(b) They can be reflected or absorbed.
(c) They can be dissipated.
(d) They can be destroyed by gamma rays.

12. What are small propellers mounted in the base of a ship's hull?
(a) Stablizers.
(b) Thrusters.
(c) Rudders.
(d) Tillers.

13. What do machines that keep something cool do to heat?
(a) Cause a change in velocity.
(b) Exchange it with cold material.
(c) Remove it.
(d) Transpose it.

14. Upon what does the amount of upthrust of an object in water depend?
(a) On what the object's salinity is.
(b) On how much water the object displaces.
(c) On what the water's electrical charge is.
(d) On whether or not the object is greater than one centimeter in diameter.

15. What imparts movement into the air or water around them on a ship?
(a) Cams.
(b) Propellers.
(c) Bits.
(d) Levers.