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Home Page Science Space Science Astronomy Earth Study Of Earth's History - Flashcards

Study Of Earth’s History – Flashcards

Kevin Stewart
8 July 2022
8 test answers

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question
When geologists refer to the "Big Five," what are they referring to?
answer
The five largest mass extinctions in Earth's history.
question
The main causes of the disasters that cause mass extinctions seem to come either from above, in the form of deadly asteroids or comets, or from below, in the form of extreme volcanic activity.
answer
True
question
Which of the following is the shortest interval of geologic time?
answer
A period
question
The deadliest of all mass extinctions, which killed off 95% of all living organisms, was the _____.
answer
Permian-Triassic
question
Which of the following eons has no rock record?
answer
Hadean
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question
What information did geologists use to divide Earth's history into intervals?
answer
changes in the fossil record
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question
Select all of the answers that apply. Which of the following are possible causes of mass extinctions that scientists have identified?
answer
- climate changes - asteroids hitting Earth - widespread volcanic activity
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question
Which of the following are examples of the effects of living things on the atmosphere and climate?
answer
- the buildup of oxygen in the atmosphere -changes in levels of carbon dioxide
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Question
What is the right structure for an essay
Answer
A paragraph is a related group of sentences that develops one main idea. Each paragraph in the body of the essay should contain:
  • a topic sentence that states the main or controlling idea
  • supporting sentences to explain and develop the point you’re making
  • evidence from your reading or an example from the subject area that supports your point
  • analysis of the implication/significance/impact of the evidence finished off with a critical conclusion you have drawn from the evidence.