17. Why were Tycho Brahe's data and observations important for Kepler's laws?
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1 point
They proved one of the laws to be true.
They disproved the laws.
They provided evidence to support the laws.
They had no relation to the laws.
They provided evidence to support the laws.
18. The acceleration of a satellite can be derived by equating the universal gravitational force and the centripetal force.
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1 point
True
False
True
19. Which is the LEAST eccentric orbit?
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1 point
e=0.001
e=0.90
e=1
e=0.25
e=0.001
20. There are two objects close to each other. If the mass of one of the objects is doubled while the distance remains the same, how does the gravitational force change?
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1 point
It becomes four times stronger
It becomes half as strong
It remains the same
It becomes twice as strong
It becomes twice as strong
21. Which two things affect gravitational force between objects?
*
1 point
Mass and distance
Mass and cellular composition
Mass and shape
Distance and shape
Mass and distance
22. Which of the eight planets in the solar system has the most elliptical orbit?
*
1 point
Venus
Earth
Mars
Mercury
23. Where is the sun located on Earth’s elliptical orbit?
*
1 point
at the aphelium
at the perihelium
at a focus
at the center of the two foci
24. According to Newton’s Laws of Motion objects will continue in a straight line at a constant _________ unless acted on by an outside _____________.
*
1 point
location, planet
speed, force
speed, time
location, force
25. The diagram below shows a model of the solar system. Which of the following statements is correct about this model?
*
1 point
Captionless Image
This is the heliocentric model of the solar system and it was created by Aristotle.
This is the geocentric model of the solar system and it was created by Kepler.
This is the heliocentric model of the solar system and it was created by Kepler.
This is the geocentric model of the solar system and it was created by Aristotle.