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Author Question: Which of the following is an example of convection? A) different kinds of material separating by ... (Read 77 times)

notis

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on: Jul 27, 2018
Which of the following is an example of convection?
 
  A) different kinds of material separating by density, like oil and water
  B) rocks sinking in water
  C) warm air expanding and rising while cooler air contracts and falls
  D) gas bubbling upward through a liquid

Question 2

What happens during the apparent retrograde motion of a planet?
 
  A) The planet appears to move eastward with respect to the stars over a period of many nights.
  B) The planet moves through constellations that are not part of the zodiac.
  C) The planet rises in the west and sets in the east.
  D) The planet moves backward in its orbit around the Sun.
  E) The planet moves backward through the sky.


ky860224

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

C

Answer to Question 2

A


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notis

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Reply #2 on: Jul 27, 2018
Thank you!


ky860224

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Reply #3 on: Jul 27, 2018
Always glad to help...


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