Orbital motion Quiz
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5 questions, one answer each
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1. A satellite is moved to an orbit of four times the radius. Its orbital speed becomes:
- A. four times
- B. twice
- C. half
- D. one quarter
2. Two satellites of different masses orbit at the same radius. Which statement is correct?
- A. The heavier one moves faster
- B. They have the same speed
- C. The lighter one moves faster
- D. The heavier one has a longer period
3. Which is NOT a requirement of a geostationary orbit?
- A. Orbit in the equatorial plane
- B. Same direction as the Earth's rotation
- C. Orbit passing over the poles
- D. A period of one sidereal day
4. A planet's orbital radius is 4 times that of another around the same star. Its period is:
- A. 2 times
- B. 4 times
- C. 8 times
- D. 16 times
5. What provides the centripetal force on the Moon as it orbits the Earth?
- A. Its own momentum
- B. The gravitational attraction of the Earth
- C. The Sun's gravity only
- D. A centrifugal force