View a FREE sample

This test consists of 15 multiple choice questions and 5 short answer questions.

Multiple Choice Questions

1. Riemannian geometry describes the following objects: _____.
(a) N-dimensional spheres.
(b) Finite, unbounded spaces.
(c) Curved spaces.
(d) Six-dimensional manifolds.

2. Which one of the following do physicists believe occurs at the central point of a black hole?
(a) Space-time is torn.
(b) An infinite-time flop-transition occurs.
(c) Space-time becomes inverted.
(d) A "white hole" is formed.

3. Which of the following is true regarding experimental evidence for super particles?
(a) They have been observed for a long time, and have only recently been identified.
(b) They have not been observed.
(c) They cannot be observed experimentally.
(d) They have been observed in multiple experiments.

4. What is the traditional method of testing theories in physics?
(a) Consensus.
(b) Experimentation.
(c) Debate.
(d) Mathematical proof.

5. What materials were formed during the period of the big bang known as the "primordial nucleosynthesis"?
(a) Anti-matter particles.
(b) Hydrogen and helium nuclei.
(c) Up, down, top, and bottom quarks.
(d) Neutrons.

6. What is a string's winding number?
(a) The number of times it is wrapped around a circular dimension.
(b) The number of other strings it is threaded with.
(c) The ratio of its Planck tension to its tension at rest.
(d) The number of dimensions it vibrations through.

7. What distinction does dark matter have?
(a) It is composed of anti-matter.
(b) It exists in curled-up dimensions.
(c) It does not give off light.
(d) It can spontaneously form black holes.

8. What is the collapse and reformation of a Calabi-Yau shape called?
(a) A space-tearing flop transition.
(b) A conifold transition.
(c) A binary transition.
(d) A manifold transition.

9. There are many possible Calabi-Yau spaces, but only shapes with which of the following characteristics are considered real possibilities?
(a) Those that meet the vibration requirements and have an appropriate number of dimensions.
(b) Those that unify the four forces and have no extended dimensions.
(c) Those that have no time-dimensions.
(d) Those that solve the perturbation theory.

10. According to modern physics, which of the following may cease to exist at the center of a black hole?
(a) Energy.
(b) Time.
(c) Space.
(d) Strings.

11. Which of the following will occur after the collapse of the universe as predicted by string theory?
(a) The universe will become a single black hole.
(b) The universe will expand again.
(c) The universe will be mirrored in another dimension.
(d) The universe will cease to exist.

12. What problem of cosmology was the inflationary model created to deal with?
(a) The cosmic background is not uniform, and should be.
(b) The cosmic background radiation is uniform, and shouldn't be.
(c) The universe is too large to support its own expansion.
(d) The universe is too small to support its own expansion.

13. The extra dimension or dimensions in M-theory are needed in order to incorporate _____.
(a) Unwound Calabi-Yau spaces.
(b) Supergravity.
(c) Electromagnetism.
(d) Electroweak duality.

14. String theory claims that super particles _____.
(a) Are massless.
(b) Come in pairs.
(c) Are the only non-string particles.
(d) Do not exist.

15. In what important way does string theory affect the cosmological model of the big bang?
(a) The universe is infinite, but has no boundaries.
(b) The big bang could have created multiple universes.
(c) The big bang created strings, not particles.
(d) The universe started at a certain minimum size.

Short Answer Questions

1. Tears in space-time are technically termed _____.

2. The horizon problem is the contradiction that which of the following properties of the universe shouldn't be uniform, but is?

3. In M-theory, what is a two-dimensional oscillating object is called?

4. Who first proposed the existence of extra dimensions?

5. How does the shape of the extra "curled up" dimensions affect the vibration of strings?

(see the answer keys)

This section contains 613 words (approx. 3 pages at 300 words per page) View a FREE sample