An astronaut would feel ____________ as he or she crossed the event horizon of a stellar
black hole.
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Incredibly strong gravity
What is the cosmological constant?
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An idea that dark energy is a repulsive force that opposes gravity.
,Which of the following is a direct result of the sun's North and South magnetic poles
flipping on a regular basis?
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The sunspot cycle
What causes fusion to stop in the core of high mass stars leading to core collapse?
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The star can't fuse iron
You see a list of stars arranged by color:
1. Red
2. Yellow
3. Blue
This same list is also in order of:
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coolest to hottest
Consider two stars (Y and Z) that both exhibit parallax. Star Z appears to move back
and forth against the background stars by a greater amount than Y. Which star is
farther away from Earth?
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, Star Y
The luminosity of a star depends on:
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Its mass and its age
Which of the following statements about the history of the Milky Way is correct?
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The Milky Way evolved from smaller clumps of stars
The surface of the sun appears sharp (limb darkening) because:
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We are looking through less material at the edge
What do astronomers observe to determine a star's temperature?
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black hole.
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Incredibly strong gravity
What is the cosmological constant?
Give this one a try later!
An idea that dark energy is a repulsive force that opposes gravity.
,Which of the following is a direct result of the sun's North and South magnetic poles
flipping on a regular basis?
Give this one a try later!
The sunspot cycle
What causes fusion to stop in the core of high mass stars leading to core collapse?
Give this one a try later!
The star can't fuse iron
You see a list of stars arranged by color:
1. Red
2. Yellow
3. Blue
This same list is also in order of:
Give this one a try later!
coolest to hottest
Consider two stars (Y and Z) that both exhibit parallax. Star Z appears to move back
and forth against the background stars by a greater amount than Y. Which star is
farther away from Earth?
Give this one a try later!
, Star Y
The luminosity of a star depends on:
Give this one a try later!
Its mass and its age
Which of the following statements about the history of the Milky Way is correct?
Give this one a try later!
The Milky Way evolved from smaller clumps of stars
The surface of the sun appears sharp (limb darkening) because:
Give this one a try later!
We are looking through less material at the edge
What do astronomers observe to determine a star's temperature?
Give this one a try later!
