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- 1. Multiple Choice
In our solar system, the sun has 99.8% of the gravitational force because...
It's the hottest planet
That's what Earth orbits
It has the most mass
It's in the center
- 2. Multiple Choice
Why is the Earth and other celestial bodies spherical?
Rocks are circular
The Earth is like a ball
Gravity pulls in a directions evenly
We are pulled in by the sun
- 3. Multiple Choice
Planets that stay in rotation around an object are defined as being in...
a circle
orbit
rotation
a sprial
- 4. Multiple Choice
What two factors influence gravitational force?
Mass and gravity
Distance and weight
Weight and shape
Mass and distance
- 5. Multiple Choice
When two planets become farther apart, or their distance increases, what happens to the gravitational force?
Gravity becomes stronger
Gravity becomes weaker
Gravity stays the same
- 6. Multiple Choice
What path will an object follow if it is not held in orbit by gravity?
The object falls
It follows a circular path
It floats on its own
It follows a straight path
- 7. Multiple Choice
When objects in space are closer to a larger mass object, the velocity (speed) is...
Less
More
the same
none of these
- 8. Multiple Choice
What terms describes Earth's path around the sun?
Elliptical path
Oval path
Disk path
Circular path
- 9. Multiple Choice
What is the name of the scientist that "discovered" gravity? He also wrote the three laws of motion!
Bill Nye
Galileo Galiei
Isaac Newton
Mr. Larson
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