地质学 TPO15-L2 Geologic Time Periods

地质学

TPO15-L2 Geologic Time Periods

Listen to part of a lecture in a geology class.

 



  1. What is the lecture mainly about?
  • A. Recognizing when one geologic epoch ends and another begins.
  • B. How geologists determine the age of Earth.
  • C. Whether humans have affected Earth’s climate.
  • D. Identifying elements that affect the formation of sediment layers.

 

  1. Why does the professor mention the Pleistocene epoch?
  • A. To explain how sediments change during an ice age.
  • B. To give an example of a well-defined geologic epoch.
  • C. To describe how certain environmental conditions affect erosion rates.
  • D. To describe the factors that influence the naming of geologic epochs.

 

  1. Researchers study sediment in order to learn about the characteristics of past geologic epochs. What does the professor say that sediment reveals about a particular epoch?
    [CHOOSE 2 ANSWERS]
  • A. The climate on Earth then the sediment formed.
  • B. The places on Earth with the highest amounts of rainfall.
  • C. The level of the oceans at the time.
  • D. The organisms that lived when the sediment formed.

 

  1. According to the professor, what is the significance of the year 1800 C.E?
    [CHOOSE 2 ANSWERS]
  • A. The human population reached 1 billion.
  • B. The Anthropocene epoch was first described.
  • C. Industrialization began to influence Earth’s environment.
  • D. There was a significant change in the amount of sediment deposited around the world.

 

  1. What does the professor imply about the spread of agriculture 8,000 years ago?
  • A. It was the true beginning of the Holocene epoch.
  • B. It was when greenhouse gases were at their lowest levels.
  • C. It was not a major cause of population growth.
  • D. It did not cause as big an environmental impact as some researchers say.

 

  1. What does the professor say about future researchers?
  • A. They may not agree that humans have had an important effect on Earth’s surface.
  • B. They will not have reliable evidence of what is happening today.
  • C. They will determine when the Anthropocene epoch began.
  • D. They will make predictions about when the Anthropocene epoch will end.



答案:
A B AD AC D C


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