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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 3 The Expanding Universe.

Multiple Choice Questions

1. Time is not separate from space, but is combined with it to form what?
(a) Three dimensional space.
(b) The spectrum.
(c) The two dimesions.
(d) Space-time.

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

3. As an observer's velocity comes close to the speed of light, the observer's mass does what?
(a) Increases to almost infinity.
(b) Decreases to almost nothing.
(c) Covers more space.
(d) Stays the same.

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

5. The distance light travels in an earth year is called what?
(a) Light speed.
(b) Light time.
(c) Light distance.
(d) A light year.

Short Answer Questions

1. What travels at the speed of 186,000 miles per second?

2. Aristotle and who believed that time is not absolute?

3. How close is the closest star, other than the sun, to earth?

4. Groups of atoms create what?

5. Galileo found the moons of what planet using his telescope?

(see the answer key)

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