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Chapter 20 section 3: The Universe Flashcards | StudBud
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Chapter 20 section 3: The Universe
Chapter 20 section 3: The Universe
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Answers
1
Where did Penzias and Wilson believe the microwave signal came from
Leftovers from the big bang
The red shift
2
The effect called the red shift can be explained by
The universe
The Doppler Effect
The Big Bang Theory
3
Which of the following theories do scientists most accept?
Open: expansion will never stop
Closed: expansion stops and starts to contract
Flat: expansion slows to a halt, but does not contract
4
Which of the following consists of all space, matter, and energy that exists?
The universe
Cosmic background radiation
5
The big bang theory is
Theory that the universe began as a single point and has been expanding
Change in observed frequency when an object is in motion
6
What objects are in the universe?
All of the above
Planets
Galaxies
Stars
7
Which of the following is a way that scientists predict the future of our universe?
all of the above
Using mathematical equations to model laws of physics in the universe
Using telescopes
Basing it on what has already happened
8
How long ago did the big bang happen?
13 billion years ago
14 billion years ago
9
Edwin Hubble discovered that the universe is explaining.
False
True
10
What did Edwin Hubble observe?
Microwave wavelengths from cosmic background radiation
spectral lines in light from other galaxies
