Name: 
 

Quiz - Chapter 04



True/False
Indicate whether the statement is true or false. (1-Point Each)
 

 1. 

The force due to gravity has the mathematical form: tf001-1.jpg
 

 2. 

Kepler overthrew the univerform circular motion idea that was previously accepted by Astronomers.
 

 3. 

Many classical Greek astronomers believed Earth could not move because they detected no parallax.
 

 4. 

The Ptolemaic model of the universe was heliocentric.
 

 5. 

The Copernican model of the solar system has the planets orbit the sun along elliptical paths.
 

 6. 

Classical Greek astronomers believed the motions of the heavens could be described by uniform circular motion.
 

 7. 

Copernicus was the first to propose that Earth moved around the sun.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question. (3-Points Each)
 

 8. 

Was the first to suggest that the Sun was the center of the Universe.
a.
Ptolmey
b.
Copernicus
c.
Galileo
d.
Aristole
e.
Kepler
f.
Tycho
 

 9. 

The Copernican system was no more accurate than the Ptolemaic system in predicting the positions of the planets because
a.
the Copernican system included uniform circular motion.
b.
the Copernican system used the old value for the radius of Earth.
c.
in the Copernican system only Mercury and Venus orbit the sun, all other planets orbited Earth.
d.
Copernicus used inaccurate data from Ptolemy's system.
e.
Copernicus had been unable to detect parallax.
 

 10. 

When we say that gravitation is universal we mean that
a.
it could be deduced from the appearance of the universe.
b.
the force of gravity from one object extends to infinity.
c.
it is important in all aspects of science.
d.
for every force there is an equal and opposite force.
e.
it is a property of all matter.
 

 11. 

It a planet has an orbital period of eight years, using Kepler’s laws, what would the distance of the planet be from the sun?
a.
2-AU
b.
3-AU
c.
4-AU
d.
5-AU
 

 12. 

Ptolemy's model of the universe
a.
included elliptical orbits.
b.
was heliocentric.
c.
contained epicycles.
d.
all of the above
e.
none of the above
 

 13. 

Which of the following people did not accept a heliocentric model for the universe?
a.
Copernicus
b.
Galileo
c.
Newton
d.
Kepler
e.
Tycho
 

 14. 

Believed in a Earth Centered universe with all of the planets revolving around the sun.
a.
Ptolmey
b.
Copernicus
c.
Kepler
d.
Tycho
e.
Aristole
f.
Galileo
 

 15. 

Proved that the Sun was the center of the Universe.
a.
Tycho
b.
Kepler
c.
Ptolmey
d.
Galileo
e.
Aristole
f.
Copernicus
 

 16. 

A(n) __________ is a circle whose center is located on the circumference of another circle.
a.
epicycle
b.
equant
c.
ellipse
d.
deferent
e.
retrograde loop
 

 17. 

Gravity obeys an inverse square relation. This statement implies that the force due to gravity between two masses
a.
will decrease as the square of the distance between the two masses increases.
b.
will cause the two masses to move in a straight line.
c.
will increase as the distance between the two masses increases.
d.
will cause the two masses to move away from each other.
e.
will cause the two masses to orbit each other.
 

 18. 

The force due to gravity between two objects depends on
I.
the mass of each object.
II.
the distance each object is from Earth.
III.
the distance between the two objects.
IV.
the speed of light.
a.
II & IV
b.
I, II, III, & IV
c.
I & II
d.
I & III
e.
I, II, & III
 

 19. 

Galileo's telescopic discoveries of mountains on the moon and spots on the sun were controversial because they suggested that the sun and moon
a.
did not orbit Earth.
b.
were the same kind of object.
c.
orbited each other.
d.
were inhabited.
e.
were not perfect spheres.
 

 20. 

Newton concluded that some force had to act on the moon because
a.
a force is needed to pull the moon away from straight-line motion.
b.
a force is needed to pull the moon outward.
c.
the moon moved at a constant velocity.
d.
a force is needed to keep the moon in motion.
e.
all of the above
 

 21. 

The __________ Tables were based on a heliocentric model of the universe and used elliptical orbits for the planets.
a.
Rudolphine
b.
Geocentric
c.
Heliocentric
d.
Copernician
 

 22. 

Was the first to show that planets orbited the sun.
a.
Copernicus
b.
Galileo
c.
Kepler
d.
Aristole
e.
Tycho
f.
Ptolmey
 



 
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