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Passage #2

Directions: Now listen to part of a talk in an astronomy class.

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NOTE TO STUDENT:

Do NOT look at the questions on the next page until after you listen. Get a pen and a piece of paper and

Listen to part of a talk in an astronomy class

Source: Fraknoi, A., Morrison, D., & C. Wolff, S. C. (2016).

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Directions: Now, answer the questions.

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1. What is the professor mainly discussing?

2. How the moon formed after a giant object impacted the Earth

3. The composition of the moon in comparison to Earth

4. Problems with theories about the origin of the moon

5. Whether or not the moon was connected to the Earth at one point

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1. How is the lecture organized?

2. The professor discusses information previously learned before introducing a new idea

3. The professor introduces an experiment and some possible problems with it

4. The professor compares theories about the moon with other objects in space

5. The professor gives a historical account of theories on the origin of the moon

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1. What are some problems with the capture theory? Select two.

2. There are too many chemical differences between the Earth and the moon

3. It is more plausible that the Earth and the moon were never connected

4. During entry into the solar system, the moon would have had too much energy to be captured

5. The moon would have a strange orbital path if it were captured by Earth

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1. Which theory about the moon is most likely true?

2. The fission theory

3. The giant impact hypothesis

4. The sister theory

5. The capture theory

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1. What does the professor imply about the sister theory?

2. Modern astronomers do not believe this theory is correct

3. It explains why the moon is made out of the same materials as Earth

4. The density of the moon compared to Earth proves it true

5. It was less popular than the capture and fission theories

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1. Why is the giant impact hypothesis also problematic?

2. The impact likely would have caused Eart`h to break apart into many pieces

3. The moon is too small for such an impact

4. There is more proof that the sister theory is correct

5. There is no way to prove it is correct

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