### Quiz

```Most evidence today indicates that the age of the Universe is
1.
2.
3.
4.
13.7 billion years.
13.7 million years.
4.56 billion years.
93 million years.
46
1
3
2
2
3
0
4
According to Hubble’s Law, if galaxy B is three times farther away
from us than galaxy A, then galaxy B will move
1. toward us three times
faster than A.
2. away from us nine times
faster than A.
3. away from us three times
faster than A.
4. toward us nine times faster
than A.
5. away from us at about the
same speed as A.
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11
3
0
1
0
2
3
4
5
Which of the following statements about the implications of
Hubble’s Law is FALSE?
1.
2.
3.
4.
5.
The law implies that the whole
universe must be expanding.
It can be used to measure distances
to remote galaxies for which we can
measure a Doppler shift.
The law does NOT require us to be
at the center of the expanding
universe.
If you were observing the universe
from a distant galaxy, you would
NOT see all the galaxies moving.
Although galaxies move away from
each other, they themselves are not
expanding in size.
38
8
4
1
0
1
2
3
4
5
According to the models of the universe that follow from Einstein’s
theory of relativity, where in the universe did the Big Bang occur?
1. Nowhere; there was no Big
Bang in these models.
2. At roughly the location of
the Milky Way; that is why
all the other galaxies are
moving away from us.
3. Everywhere at the same
time.
4. At the location of the Great
Attractor.
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1
1
1
2
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3
4
If you wanted to find a type of atom in your little finger that has been
in its present form (been the same element) since the beginning of the
universe, which element should you look for?
1.
2.
3.
4.
Hydrogen
Carbon
Iron
Oxygen
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0
0
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The reciprocal of the Hubble constant (1/H0) is a rough measure
of
1. the period of a typical
Cepheid variable.
2. the distance to the last
galaxies that formed.
3. the age of the universe.
4. the luminosity of a type I
supernova explosion.
5. the cost of building a
telescope in space.
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1
3
2
2
3
4
0
5
The resolution of Olbers’ paradox suggests that it gets dark at
night because
1. the universe is not infinite
in age.
2. the universe is closed.
3. the universe is not static.
4. the universe is flat.
38
8
3
1
2
2
3
4
If the Hubble constant, H, is larger at great distances, then
1. the universe must be older
than we suspect.
2. the matter in the universe
is not important to its
motion.
3. the expansion is slowing.
4. the expansion is
accelerating.
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1
1
2
4
3
4
The best data and models suggest that the universe is
1. open, expanding and
accelerating.
2. open, expanding, but
decelerating.
3. closed, expanding and
accelerating.
4. closed, expanding, but
decelerating.
5. flat, expanding and
accelerating.
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13
10
0
1
2
3
1
4
5
```