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- 1. Multiple Choice
How is a theory different from a guess? Choose the best answer.
A theory cannot be disproven; a guess can be
A theory is backed up by hard evidence; a guess is not
A theory is agreed upon by scientists; a guess is only agreed on by laypeople
A theory is usually very old; a guess is usually very new
- 2. Multiple Choice
Where is the center of the universe located?
There is no center of the universe.
At the center of the Milky Way galaxy.
14.5 billion light years away from Earth.
In a large singularity near the Andromeda Galaxy.
- 3. Multiple Choice
Which word best describes a singularity?
large
cold
dense
flammable
- 4. Multiple Choice
What was contained in the singularity that gave rise to the Big Bang? Choose the best answer.
Gamma rays
Electrons in a highly excited state
One atom of every known element in our universe
All the mass, energy, and time in our universe
- 5. Multiple Choice
Which term best describes conditions a few seconds after the Big Bang took place?
very cold
very hot
all liquid
very calm
- 6. Multiple Choice
What do the initial moments after the Big Bang have in common with the universe as it exists now? Choose the best answer.
All the stars, galaxies, and planets that exist today were formed just a few moments after the Big Bang.
The universe back then could not sustain life, and it cannot sustain life now.
The universe was extremely hot then, and it is still extremely hot now.
The universe began expanding then, and it is still expanding today.
- 7. Multiple Choice
How does the steady state theory of the universe differ from the Big Bang theory?
The steady state theory proposes that dark matter does not exist; the Big Bang theory proposes that it does.
The steady state theory puts the age of the universe at 4 million years; the Big Bang theory puts it at 5 million.
The "steady state" universe may not have had a beginning; the "Big Bang" universe definitely did
The steady state theory claims that faster-than-light travel is possible; the Big Bang theory claims it isn't.
- 8. Multiple Choice
Place the following in sequence: A) Hubble makes his discoveries; B) Cosmic background radiation is first detected; C) Lemaitre proposes his theory
.A, B, C
B, C, A
C, A, B
C, B, A
- 9. Multiple Choice
According to the Big Bang theory, how old is the universe?
6,000 years
65 million years
4.5 million years
14.5 billion years
- 10. Multiple Choice
What is one major piece of evidence that the Big Bang theory is correct?
Astronomers have detected leftover radiation from the Big Bang
Everything in the universe has remained in the same location for billions of years
Astronomers have discovered that the universe is no longer expanding
Astronomers have discovered evidence that the universe will soon begin contracting in a "Big Crunch"
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