The Big Bang theory does NOT explain:

Why the Cosmic background Radiation is so uniform

Matter in the universe is found

in alternating clumps of matter and vast empty spaces

What observation are scientists trying to explain with the term “Dark Energy”

The universe's expansion is Accelerating

The Cosmological Red Shift ____ the same as a Doppler shift because _______

IS NOT space is an expanding reference frame

A galaxy's light took 4 Billion yrs to get to us. It's now 6 Billion light yrs from us because:

The Universe has expanded since the light left the galaxy

The radiation left over from the Big Bang has cooled off because?

The universe has been expanding since then

WHY have the photons generated in the Big Bang COOLED OFF, and by HOW MUCH?

Because space has expanded: 1,000 times

The scale of the Universe is

Too Vast for the human mind to comprehend

What might be the only glowing objects in the universe a Trillion years from now? Why?

White Dwarfs because they can take "forever" to cool off

What do we call the swarm of photons left over from the Big Bang?

Cosmic Microwave Background Radiation

What did Edwin Hubble use to judge the distance of galaxies far away from us?

Cepheid Variable stars and Type IA Supernovae

What did Edwin Hubble discover as he looked at many galaxies far away from us?

Galaxies receding from us faster, the farther away they were

The observation that galaxies in all directions are receding from us, leads to the conclusion

That NO galaxy is the center of the Universe

Inflationary Theory explains why

The Cosmic background Radiation is so uniform now

When were the photons created in the Big Bang first able to travel freely?

380,000 years after the Big Bang

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Cosmology Review

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Cosmology Unit Review #pkscience1 #astronomy #SGSS 3 #cosmology

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Questions 30

Answers

1
The Big Bang theory does NOT explain:
The abundance of light elements in the universe
Why the Cosmic background Radiation is so uniform
The existence of the Cosmic Microwave Background Radiation
The Hubble Expansion
2
Matter in the universe is found
Mostly concentrated in one area, with the rest being empty
None of the above - we can’t see very far from our galaxy
with almost no gaps between matter, from atomic to galaxies
in alternating clumps of matter and vast empty spaces
3
What fills most of the Universe
Nothing
Molecular clouds
Stars
Galaxies
4
What observation are scientists trying to explain with the term “Dark Energy”
The photons from the big bang are red-shifted
The Universe is bigger than we can ever see
The universe has cooled since the Big Bang
The universe's expansion is Accelerating
5
Who won the Nobel Prize for discovering the radiation left over from the Big Bang?
Penzias and Wilson
Watson and Crick
Hubble and James
Galileo and Newton
6
The Big Bang model predicts the current temp of the radiation left over from the Big Bang is
3 Million K
3 Thousand K
3 Billion K
3 K
7
Astronomers believe that ______ is driving the cosmological expansion
The Hubble Expansion
Dark Energy
Cosmic Microwave Background Radiation
The abundance of light elements in the Universe
8
Which of the following is NOT observational evidence supporting the Big Bang Theory
Dark Energy
The Hubble Expansion
Cosmic Microwave Background Radiation
The abundance of light elements in the universe
9
The radiation left over from the Big Bang is uniform throughout the sky to one part in _____?
100,000
2
100
20
10
The Cosmological Red Shift ____ the same as a Doppler shift because _______
IS Photons travel relative to fixed galaxies in for both
IS both involve the stretching of photons’ wavelengths
IS NOT space is an expanding reference frame
IS they both involve a fixed reference frame
11
A galaxy's light took 4 Billion yrs to get to us. It's now 6 Billion light yrs from us because:
The Cosmic Microwave Background Radiation has cooled
The Universe has expanded since the light left the galaxy
Dark energy has blue shifted the light
Dark energy has red shifted the light
12
What evidence led directly to the Big Bang Theory
The Hubble Expansion
The abundance of light elements in the universe
The distribution of Galaxies in the universe
Cosmic Microwave Background Radiation
13
The radiation left over from the Big Bang has cooled off because?
The universe has been expanding since then
The Galaxies in the universe slowed the photons
The light elements in the universe absorbed some of them
Dark Energy has absorbed some
14
Astronomers’ use ___ to determine the rate of cosmological expansion from VERY long ago
The Hubble Expansion
Type IA Supernovas
The General Theory of Relativity
Cosmic Microwave Background Radiation
15
On the largest scales, matter in the universe appears similar to
both of the above
patterns of neurons in the brain
none of the above
light reflected from a pool of water
16
The time it would take for humans to travel to the Sun’s nearest neighbor star is
about 40 years
about 5-10 years
A matter of months
Way more than a human lifetime
17
Astronomers have evidence that the cosmological expansion rate is
Remaining constant
Decreasing
Increasing
Oscillating between zero and infinity
18
WHY have the photons generated in the Big Bang COOLED OFF, and by HOW MUCH?
Because space has expanded: 1,000 times
Because of Inflation: 1,000 times
Because space has absorbed the heat: 10,000 times
Because they have traveled so far to reach us: 100 times
19
The scale of the Universe is
Millions of times bigger than our Local Group of Galaxies
Too Vast for the human mind to comprehend
Just a few hundred times the scale of our Galaxy
Just a few hundred times the scale of our Solar System
20
What standard candle is used to determine the distance of the farthest observable galaxies?
Cepheid Variable stars
White Dwarfs
Neutron stars
Type IA Supernovae
21
The field of Cosmology assumes that
The Laws of Physics are the same everywhere in the Universe
All of the above
The Universe is Homogeneous (looks the same everywhere)
The Universe is Isotropic - looks the same in all directions
22
What might be the only glowing objects in the universe a Trillion years from now? Why?
Black holes, because no one really knows if they will die
Our own Milky Way galaxy
White Dwarfs because they can take "forever" to cool off
Supernova, because they are so bright to begin with
23
What do we call the swarm of photons left over from the Big Bang?
Cosmic Microwave Background Radiation
The Hubble Expansion
Cosmic Expansion
Dark Energy
24
What did Edwin Hubble use to judge the distance of galaxies far away from us?
Cepheid Variable stars and Black Holes
Cepheid Variable stars and Neutron stars
Type IA Supernovae and Black Holes
Cepheid Variable stars and Type IA Supernovae
25
What did Edwin Hubble discover as he looked at many galaxies far away from us?
Galaxies receding from us faster, the farther away they were
Galaxies receding from us at a constant rate
Galaxies receding from us slower, the farther away they were
Galaxies approaching us faster, the farther away they were
26
The observation that galaxies in all directions are receding from us, leads to the conclusion
That NO galaxy is the center of the Universe
That WE are at the center of the Universe
That ALL galaxies are at the center of the Universe
That our universe must be like a balloon
27
What was the temperature of the photons from the Big Bang when they were free to travel?
3 Thousand K
3 Million K
3 Billion K
3 K
28
Inflationary Theory explains why
Dark Matter exists
Photons could not escape for a long time after the Big Bang
The Cosmic background Radiation is so uniform now
Dark Energy exists
29
Which pieces of observational evidence support the Big Bang Theory?
CMBR & Hubble Expansion
Abundance of light elements & CMBR
All of the Above
Hubble Expansion & Abundance of light elements
30
When were the photons created in the Big Bang first able to travel freely?
1 Million years after the Big Bang
about 18 years ago, because before that I didn't see a thing
1,000 years after the Big Bang
380,000 years after the Big Bang

Cosmology Review Flashcards | StudBud