Practice Modern Theories (2.2) - THE ORIGIN AND EVOLUTION OF THE EARTH

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the Big Bang Theory?
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Think about the origin of the universe.
Question 2.
Name the clouds where stars begin to form.
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These are not just clouds; they are named after something celestial.
3Question 3.
How old is the universe according to the Big Bang Theory?
- 4.6 billion years
- 13.7 billion years
- 3.8 billion years
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Think about the significant event around that number.
4Question 4.
True or False: The Steady State Theory suggests the universe is always changing.
- True
- False
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Consider 'steady' as constant.
Question 5.
If the universe is expanding, how do astronomers measure the rate of that expansion? Discuss and provide examples of methods used.
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Consider how light changes as it travels in an expanding universe.
Question 6.
Explain how the observations of cosmic microwave background radiation support the Big Bang Theory.
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Think about what remnants would be left over from an enormous explosion.

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