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Senior High School: 11th and 12th Grade
Physics
Waves - The Expanding Universe
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Q.1
The faster a star or galaxy is moving (relative to us), we say that the redshift is …
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bigger
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smaller
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the same
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There is no correlation between speed and size of red-shift
Q.2
What happens to the wavelength of light from stars that are moving away from us?
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It gets shorter
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It doesn't change
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It gets longer
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It goes zig zag
Q.3
If scientists find new evidence that doesn’t support the Big Bang Theory, what should other scientists do?
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Have a party
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Ignore the evidence and keep on believing what they always have
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Dismiss them as crackpots
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Test the evidence to ensure that it is reproducible
Q.4
How do we know that the Universe is currently expanding?
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Light waves from distant galaxies are shifted so that they appear redder than they normally would
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Light waves from distant galaxies are shifted so that they appear bluer than they normally would
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Gamma waves from distant galaxies are shifted so that they appear redder than they normally would
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Delta waves from distant galaxies are shifted so that they appear redder than they normally would
Q.5
How do we know black holes exist if we cannot see them?
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They bend light
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They emit a very specific type of radiation
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Objects near them orbit around them
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All of the above
Q.6
"In space no one can hear you scream" was a famous movie quote, but is that actually true and why?
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It is not true
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It is true. Sound waves need particles to vibrate to travel. In space, particles are few and far between so sound cannot travel through space
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It is not true, but we don't know why
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It is true. Space is too cold for sound waves to travel
Q.7
How long does it take the light from the sun to reach us?
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Instantly
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2 minutes
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8 minutes
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20 minutes
Q.8
The shift seen when an object is moving towards us is not red, it is …
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pink
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blue
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green
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black
Q.9
What types of radiation are emitted by the Sun?
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Infra-Red
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Ultra-Violet
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Light
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All of the above
Q.10
What is blueshift?
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When blue light is emitted from a source
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When an object is moving towards an observer, the light emitted from the object is shifted to the blue part of the spectrum
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When an object is moving towards an observer, the light emitted from the object is shifted to the red part of the spectrum
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There is no such thing as blue shift
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