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Author Question: The energy emitted by the Sun comes from chemical reactions. a. True b. False Indicate whether ... (Read 85 times)

ghost!

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on: Jul 27, 2018
The energy emitted by the Sun comes from chemical reactions.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

How can tidal forces affect the rotation of celestial bodies and their orbital motion? Hint: Consider Earth and the Moon.
 
  What will be an ideal response?


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snackralk

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Reply #1 on: Jul 27, 2018
Answer to Question 1

False

Answer to Question 2

Tidal forces affect orbital motion. For example, Earth rotates eastward, and friction with the ocean bed drags the tidal bulges slightly eastward out of a direct Earth-Moon line. These tidal bulges are massive, and their gravitational field pulls the Moon forward in its orbit. As a result, the Moon's orbit is growing larger by about 3.8 cm a year. Earth's gravitation exerts tidal forces on the Moon, and friction within the flexing rock has slowed the Moon's rotation to the point that it now keeps the same face toward Earth.


ghost!

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Reply #2 on: Jul 27, 2018
TY


snackralk

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Reply #3 on: Jul 27, 2018
You're welcome


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