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More cards in this set
Card 16
Front
What is the relationship between the speed a galaxy is moving away from us and the distance it is from us?
Back
Card 17
Front
What does the motion of the galaxies suggest.
Back
Card 18
Front
What are the relative ages of the sun, the earth and the universe?
Back
Card 19
Front
What do scientists believe began the universe?
Back
Card 20
Front
Why is the future of the universe hard to predict?
Back
Card 21
Front
How is wave frequency, in Hertz (Hz) measured?
Back
Card 22
Front
What is wave length?
Back
Card 23
Front
What is amplitude?
Back
Card 24
Front
What is the equation for wave speed?
Back
Card 25
Front
How is wave length related to the frequency when wave length is constant?
Back
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