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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 3, Of Warps and Ripples.

Multiple Choice Questions

1. According to general relativity, which of the following is said to warp or bend space-time?
(a) Constant, relativistic speed motion.
(b) Accelerated motion and orbital motion.
(c) Accelerated motion and gravity.
(d) Gravity and electromagnetic fields.

2. Which of the following did Einstein considered time?
(a) The fifth fundamental force of the universe.
(b) A three-dimensional field.
(c) A fourth dimension, alongside the three spatial dimensions.
(d) A physical substance, composed of particles.

3. Which of the following correctly describes the structure of an atom?
(a) A single nucleus composed of both electrons and protons.
(b) A cloud of electrons orbiting a dense nucleus.
(c) A cloud of neutrons orbiting a nucleus of other particles.
(d) A cloud of protons, each with an electron orbiting it.

4. What is the fundamental particle, the smallest possible bundle of energy, for the electromagnetic force?
(a) The photon.
(b) The neutrino.
(c) The electron.
(d) The gluon.

5. In the 1800s, James Clerk Maxwell used a new mathematical framework to unite _____.
(a) Magnetism and light.
(b) Nuclear forces and gravity.
(c) Electricity and magnetism.
(d) Magnetism and gravity.

Short Answer Questions

1. In 1968 it was discovered that protons and neutrons are composed of which type of particle?

2. How can black holes be detected?

3. Two theories form the basis of modern physics, but are incompatible with one another. String theory attempts to reconcile these fields. What are these two theories?

4. What is the result when a particle of matter and a particle of antimatter are brought into contact?

5. What is the shape of all particles, at the smallest possible level, according to string theory?

(see the answer key)

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