The atmosphere is held to the earth by:
Correct answer: B. Gravity
- A. Winds
- B. Gravity
- C. Clouds
- D. The rotation of earth
Explanation
The atmosphere is held to the Earth by gravity. The Earth's gravity pulls on the atmosphere, which is why it doesn't float away into space. The atmosphere is also held to the Earth by the Earth's rotation. The Earth's rotation creates centrifugal force, which pushes the atmosphere outward. However, gravity is stronger than centrifugal force, so the atmosphere stays close to the Earth.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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