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Mini-Quiz: Influence of Gravitation in the Universe

by Ron Kurtus (revised 6 March 2011)

Take this Mini-Quiz to check your understanding of the lesson material.



1. How were galaxies and stars formed?

They were created when the Big Bang occurred

Gravitation separated objects into distinct galaxies and stars

The force of gravitation clumped masses of material together

2. What causes the bulge at the Earth's equator?

Gravitation from the Sun causes the bulge

The rotation of the Earth on its axis creates an outward force at the equator

The extreme heat at the equator causes material to expand

3. Why do stars revolve around the center of a galaxy?

Gravitation stabilized the initial motion of the stars into orbits

Scientists think it has something to do with gravity

Otherwise they would fly off into space

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.


You have a universe of potential


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