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Questions and Answers
What is the direction of Earth's rotation?
What is the direction of Earth's rotation?
- Clockwise
- Prograde (correct)
- Westward
- Retrograde
Where is the North Pole located?
Where is the North Pole located?
- The Terrestrial South Pole
- The Northern Hemisphere (correct)
- The South Hemisphere
- The Geographic South Pole
What causes Earth's rotation to slow slightly with time?
What causes Earth's rotation to slow slightly with time?
- Planetary collisions
- Tidal effects of the Sun
- Tidal effects of the Moon (correct)
- Magnetic field disturbances
How often does Earth rotate with respect to distant stars?
How often does Earth rotate with respect to distant stars?
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How has the length of a day changed over time?
How has the length of a day changed over time?
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Study Notes
Earth's Rotation
- Earth's rotation is from west to east, meaning it rotates from the west towards the east.
Geographic Poles
- The North Pole is located at the northernmost point on Earth, at the center of the Arctic Circle.
Effects on Earth's Rotation
- Earth's rotation slows slightly with time due to the gravitational interactions between the Earth and the Moon.
Earth's Rotation Period
- Earth rotates approximately once every 23 hours and 56 minutes with respect to distant stars, which is known as a sidereal day.
Changes in Day Length
- The length of a day has increased over time due to the Earth's rotation slowing down, resulting in a longer day.
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