2. Stars without enough mass to become a black hole can become what?
(a) Blue giants.
(b) White dwarfs.
(c) Red giants.
(d) Red dwarfs.

3. When was the uncertainty principle developed?
(a) 1920.
(b) 1919.
(c) 1929.
(d) 1926.

4. Hawking is what type of physicist?
(a) Particle.
(b) Astro.
(c) Micro.
(d) Theoretical.

5. Most people believe that since the universe had a beginning it must have a what?
(a) An end.
(b) A timeline.
(c) A middle.
(d) A birth.

6. Who developed the uncertainty principle?
(a) Marie Curie.
(b) Stephen Hawking.
(c) Werner Heisenberg.
(d) Max Plank.

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

8. A black hole has zero what?
(a) Mass.
(b) Expansion.
(c) Volume and surface area.
(d) Curvature.

9. Aristotle and who believed that time is not absolute?
(a) Kapal.
(b) Newton.
(c) Einstein.
(d) Galileo.

10. For satellites orbiting the earth, time does what in relation to the ground of the earth?
(a) Remains the same.
(b) Runs almost at the same pace.
(c) Slows down.
(d) Speeds up.

11. As a consequence of quantum mechanics, waves sometimes behave like what?
(a) Radiation.
(b) Rays.
(c) Particles.
(d) Waves.

12. Scientists start their understanding of the universe with what?
(a) Observations.
(b) A theory.
(c) Mathematics.
(d) Observations and mathematics.

13. What theory best describes the singularities of black holes and big bangs?
(a) Molecular engineering.
(b) Theory of relativity.
(c) Quantum mechanics.
(d) Theory of everything.

14. The general theory of relativity best describes what world?
(a) The world of large objects in space.
(b) The world of large bodies of mass.
(c) The world of high speeds.
(d) The world of galaxies.

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