Earth's orbital speed is __________?
Correct answer: D. 30 km/s
- A. 70 km/s
- B. 60 km/s
- C. 45 km/s
- D. 30 km/s
Explanation
Earth travels around the Sun at an average orbital speed of about 30 km/s. The larger values, such as 45 km/s or 60 km/s, may be selected by confusing Earth's orbital speed with an escape speed or another astronomical velocity.
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