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Listening Quiz: Giải Thích Vật Chất Tối và Năng Lượng Tối – Medium Level
Th7 1, 2024
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bởi
Anna Phạm
trong
Tiếng Anh dành cho Nhà vật lý học (English for Physicist)
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1.
What is the conversation mainly about?
Why gravity stops the universe from expanding
The history of space telescopes
The differences between dark matter and dark energy
How stars are created in galaxies
Explanation:
Michael and Sarah discuss what dark matter and dark energy are, how they affect the universe, and how they differ.
2.
According to Michael, how do scientists know dark matter is there?
By measuring the temperature of planets
By watching it shine in distant space
By listening to signals from black holes
By seeing its gravity pull on stars and galaxies
Explanation:
Michael says, ‘We see its gravity pulling on stars and galaxies.’
3.
What does dark energy do, according to the conversation?
It creates stars from gas clouds
It stops gravity from working
It makes the universe expand faster and faster
It holds galaxies together
Explanation:
Michael explains that dark energy makes the universe expand faster and faster.
4.
What can be inferred about dark matter and dark energy from the conversation?
They are the same thing with different names
They are both invisible, but scientists can observe their effects
They can be seen directly with telescopes
They only affect the Milky Way
Explanation:
Michael says both are invisible, but their effects can be seen, so the best inference is that scientists observe them indirectly.
5.
Why does Michael say, ‘Exactly. They have opposite effects in space’?
To change the topic to another science subject
To confirm Sarah’s summary of the two ideas
To correct Sarah for misunderstanding dark energy
To say that scientists disagree about both topics
Explanation:
Sarah summarizes that dark matter holds things together and dark energy pushes them apart, and Michael confirms this is correct.
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