2. The development of what kind of technology depends upon the theory of quantum mechanics?
(a) Liquid crystal displays.
(b) Microelectronics.
(c) Silicon transmisions.
(d) Cell phones.

3. Who discovered the theory of gravity?
(a) Hubble.
(b) Galileo.
(c) Einstein.
(d) Newton.

4. Philosophers try to understand the universe using what method?
(a) Disciplined logic.
(b) Circular arguments.
(c) Mathematics.
(d) Religious reasoning.

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

6. Which virtual particle carries the electromagnetic force?
(a) Electron.
(b) Magnetron.
(c) Photon.
(d) Proton.

7. In the universe, objects move in what type of direction?
(a) In straight lines.
(b) In curved lines.
(c) In waves.
(d) In circular motions.

8. The disease Stephen Hawking has affects what?
(a) His mind.
(b) His ability to reason.
(c) His body.
(d) His emotions.

9. The universe is largely made up of what?
(a) Dark matter.
(b) Empty space.
(c) Planets.
(d) Stars.

10. In what year did Wolfgang Pauli bring the exclusion principle to physics?
(a) 1928.
(b) 1941.
(c) 1925.
(d) 1932.

11. What is one of the colors of quarks?
(a) Purple.
(b) Red.
(c) White.
(d) Yellow.

12. What is the name of the particles that make up light?
(a) Protons.
(b) Photons.
(c) Gluons.
(d) Electrons.

13. What travels at the speed of 186,000 miles per second?
(a) Waves.
(b) Electrons.
(c) Light.
(d) Sound.

14. Who published a paper on Brownian motion in 1905?
(a) Murray Gell-Mann.
(b) Albert Einstein.
(c) Ernest Rutherford.
(d) James Chadwick.

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