| The Big Bang | Cosmic Background Radiation | Doppler effect | EM spectrum | Star life cycle |
|---|---|---|---|---|
|
13.7 billion years ago
How long ago did the universe begin?
|
It cools down
What happens to the radiation as the universe expands?
|
It shows that the universe is expanding
What does the Doppler effect have to do with the Big Bang?
|
Gamma rays
Which waves have the highest frequency?
|
In the second stage
When is an average star created?
|
|
Cosmology
What is the study of the universe called?
|
300,000 years after the Big Bang
When was the radiation emitted?
|
Frequency
Which sound property describes how high or low a sound seems to a person?
|
Radio waves
Which waves have the longest wavelengths?
|
Planetary nebula
What is the fourth stage in the life cycle of an average star?
|
|
Edwin Hubble
Who showed that the universe is actually bigger than our galaxy?
|
3 K
What is the temperature of the Radiation?
|
Stars, they are constantly moving away from earth showing a red tint because of the Doppler effect
What is an example for Doppler effect?
|
Gamma
Which waves are the most energetic?
|
Main Sequence
What stage of life is the Sun in?
|
|
That the universe is expanding because distant galaxies are moving away from us
What did George Lemaitre suggest?
|
George Smoot
Who used cosmic background radiation to make a picture of the universe when it was only 12 hours old?
|
When a wave source moves toward an observer
When does the Doppler effect occur?
|
Transverse
All EM waves are transverse or mechanical?
|
Supernova
Which stage of life involves an explosion?
|
|
Hydrogen
what is 75% of the Universe made of?
|
. Energy remaining from the Big Bang
What is cosmic background radiation?
|
It happens because there is relative motion between a wave source and the observer
Why does the Doppler effect happen?
|
Travel through empty space
EM waves are the only type of waves that can what?
|
It's mass
What determines the life cycle of a star?
|
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