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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, the change that an object causes in the fabric of space-time depends directly on _____.
(a) Its density.
(b) Its mass.
(c) Its proximity to another massive body.
(d) Its direction compared to the observer.

2. According to Einstein's theory of general relativity, if two objects have a gravitational pull on one another, and one changes its mass or distance from the other, how quickly does the effect of this change travel to the other object?
(a) Near the speed of light, faster for more massive objects.
(b) Near the speed of light, faster for lighter objects.
(c) Instantaneously.
(d) At exactly the speed of light.

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

4. What characteristic of the string determines the properties of the particle it represents?
(a) Its length.
(b) Its frequency of vibration.
(c) Its mass.
(d) The number of other strings with which it is threaded.

5. According to Newton's theory of gravity, if two objects have a gravitational pull on one another, and one changes its mass or distance from the other, how quickly does the effect of this change travel to the other object?
(a) Near the speed of light, faster for more massive objects.
(b) Near the speed of light, faster for lighter objects.
(c) At exactly the speed of light.
(d) Instantaneously.

Short Answer Questions

1. What are the components of an atomic nucleus?

2. Which of the following did Einstein considered time?

3. What type of motion cannot be felt or sensed by the moving observer?

4. Einstein's equation, E=mc^2, states that which of the following are equivalent?

5. When the distance between two objects is doubled, what happens to the strength of the gravitational pull between them?

(see the answer key)

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