2. Quanta are made of what?
(a) Packets of emitted astroelectric radiation.
(b) Packets of emitted gamma radiation.
(c) Packets of emitted electromagnetic radiation.
(d) Packets of emitted hydroelectric radiation.

3. All the particles in the universe are what type of spin?
(a) One-half.
(b) One.
(c) Zero.
(d) Two.

4. The distance light travels in an earth year is called what?
(a) Light time.
(b) A light year.
(c) Light speed.
(d) Light distance.

5. What type of theories try to bring the various virtual particles together as one entity, but do not include gravity?
(a) Grand Unification Theories.
(b) Grand Complete Theories.
(c) Theories of Unification Principles.
(d) Theories of Everything.

6. The universe has how many dimensions?
(a) Four.
(b) Five.
(c) Three.
(d) Two.

7. A black hole results from a large star using up what type of fuel?
(a) Hydrogen.
(b) Helium.
(c) Gaseous.
(d) Liquid.

8. What force is so strong in a black hole that nothing can escape?
(a) Force.
(b) Gravity.
(c) Electricity.
(d) Magnetism.

9. Why do the theories of quantum mechanics and general relativity need to be unified?
(a) To accurately calculate observations.
(b) To accurately describe the fate of the universe.
(c) To accurately describe future events.
(d) To accurately describe the very small and the very large.

10. Stephen Hawking has what disease?
(a) Lou Gehrig's disease.
(b) Cancer.
(c) AIDS.
(d) Ancel Hoffman disease.

11. Who proposed the elliptical orbits of the planets?
(a) Kepler.
(b) Einstein.
(c) Newton.
(d) Galileo.

12. The only constant in the universe is what?
(a) The speed of sound.
(b) Time.
(c) The speed of light.
(d) Space.

13. Galaxies contain what?
(a) The universe.
(b) Other galaxies.
(c) Stars.
(d) The earth.

14. What star system has a fairly certain black hole?
(a) Marlin X-2.
(b) Pegasus X-2.
(c) Cygnus X-1.
(d) Lythia X-1.

15. Who brought forth the idea that the earth and planets revolve around the sun?
(a) Aristotle.
(b) Ptolemy.
(c) Galileo.
(d) Copernicus.