Deck 84: Dark Energy and the Fate of the Universe

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سؤال
Dark matter makes up _____________ of the universe.

A) 23%
B) 90%
C) 73%
D) 0.5%
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لقلب البطاقة.
سؤال
Heat death is

A) when a star ceases fusing any elements.
B) when the expansion of space gets so great that our galaxy is ripped apart.
C) when the universe recollapses into a hot, dense mass.
D) when all the available fuel in the universe is consumed.
سؤال
What is the difference between dark matter and dark energy?

A) Dark matter exists today, whereas dark energy existed only in the distant past.
B) There is no difference.
C) Dark matter is attractive and slows the expansion. Dark energy is repulsive and accelerates the expansion.
D) Dark energy is the energy emitted by dark matter.
سؤال
Based on supernova studies, it appears the universe is ____.

A) curved
B) accelerating
C) closed
D) slowing down
سؤال
________________ is when there is no longer any source of power in the universe.
سؤال
________________ supernovae are important standard candles in cosmology.
سؤال
Dark energy is another name for a cosmological constant.
سؤال
As the expansion of the universe accelerates, parts of the universe that we cannot now see will become visible.
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ملء الشاشة (f)
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Deck 84: Dark Energy and the Fate of the Universe
1
Dark matter makes up _____________ of the universe.

A) 23%
B) 90%
C) 73%
D) 0.5%
23%
2
Heat death is

A) when a star ceases fusing any elements.
B) when the expansion of space gets so great that our galaxy is ripped apart.
C) when the universe recollapses into a hot, dense mass.
D) when all the available fuel in the universe is consumed.
when all the available fuel in the universe is consumed.
3
What is the difference between dark matter and dark energy?

A) Dark matter exists today, whereas dark energy existed only in the distant past.
B) There is no difference.
C) Dark matter is attractive and slows the expansion. Dark energy is repulsive and accelerates the expansion.
D) Dark energy is the energy emitted by dark matter.
Dark matter is attractive and slows the expansion. Dark energy is repulsive and accelerates the expansion.
4
Based on supernova studies, it appears the universe is ____.

A) curved
B) accelerating
C) closed
D) slowing down
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5
________________ is when there is no longer any source of power in the universe.
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افتح القفل للوصول البطاقات البالغ عددها 8 في هذه المجموعة.
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6
________________ supernovae are important standard candles in cosmology.
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افتح القفل للوصول البطاقات البالغ عددها 8 في هذه المجموعة.
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7
Dark energy is another name for a cosmological constant.
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افتح القفل للوصول البطاقات البالغ عددها 8 في هذه المجموعة.
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8
As the expansion of the universe accelerates, parts of the universe that we cannot now see will become visible.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 8 في هذه المجموعة.
فتح الحزمة
k this deck
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فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 8 في هذه المجموعة.