Motion in the Universe Quiz
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5 questions, one answer each
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1. What galaxy is our Solar System located in?
- A. Andromeda
- B. Milky Way
- C. Triangulum
- D. Whirlpool
2. What force causes planets to orbit the Sun?
- A. Magnetic force
- B. Gravitational force
- C. Electrostatic force
- D. Nuclear force
3. Why is gravitational field strength on the Moon less than on Earth?
- A. The Moon is further from the Sun
- B. The Moon has less mass than Earth
- C. The Moon has no atmosphere
- D. The Moon spins faster
4. Which best describes the orbit of a comet compared with a planet?
- A. Both are perfectly circular
- B. A comet's orbit is highly elliptical, a planet's is nearly circular
- C. A comet's orbit is nearly circular, a planet's is highly elliptical
- D. Neither orbits in a curved path
5. A satellite orbits Earth with radius 8.0 × 10^6 m and time period 7200 s. What is its orbital speed?
- A. About 700 m/s
- B. About 7000 m/s
- C. About 70000 m/s
- D. About 70 m/s