Name: 
 

Quiz - Chapters 04 & 05



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

 1. 

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

 2. 

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

 3. 

Reflecting telescopes are no longer popular with astronomers because they are expensive and suffer from chromatic aberration.
 

 4. 

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

 5. 

The Ptolemaic model of the universe was heliocentric.
 

 6. 

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

 7. 

The amount of energy a photon carries depends on its wavelength.
 

 8. 

The force due to gravity has the mathematical form: tf008-1.jpg
 

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

 9. 

Astronomers build telescopes on tops of mountains because
a.
there is less air to dim the light.
b.
the seeing is better.
c.
CCDs work better when there is less oxygen in the air.
d.
all of the above
e.
a and b
 

 10. 

Which of the following types of electromagnetic radiation has the smallest frequency?
a.
visible light
b.
x-rays
c.
radio
d.
infrared radiation
e.
gamma-rays
 

 11. 

Which of the following types of electromagnetic radiation has the greatest energy?
a.
gamma-rays
b.
visible light
c.
infrared radiation
d.
radio
e.
x-rays
 

 12. 

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
 

 13. 

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

 14. 

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

 15. 

Which of the following types of electromagnetic radiation has the lowest energy?
a.
infrared radiation
b.
visible light
c.
x-rays
d.
gamma-rays
e.
ultraviolet
 

 16. 

Radio telescopes have poor resolving power because
a.
their diameters are so large.
b.
the energy they receive is not electromagnetic radiation.
c.
radio waves have long wavelengths.
d.
a and b
e.
none of the above
 

 17. 

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

 18. 

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

 19. 

__________ has (have) wavelengths that are longer than visible light.
a.
Gamma-rays
b.
Ultraviolet light
c.
Infrared radiation
d.
X-rays
e.
a, b and d above
 

 20. 

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

 21. 

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.
were the same kind of object.
b.
did not orbit Earth.
c.
were not perfect spheres.
d.
were inhabited.
e.
orbited each other.
 

 22. 

Blue light
a.
has a lower frequency than red light.
b.
has a greater energy than ultraviolet light.
c.
travels at a greater speed than red light.
d.
has a greater energy than red light.
e.
has a longer wavelength than red light.
 

 23. 

Which of the following types of electromagnetic radiation has the highest frequency?
a.
infrared radiation
b.
x-rays
c.
visible light
d.
gamma-rays
e.
radio
 

 24. 

The __________ of a telescope is a measure of its ability to show fine detail and depends on the diameter of the objective.
a.
light-gathering power
b.
resolving power
c.
focal length
d.
spherical aberration
e.
magnifying power
 

 25. 

An achromatic lens
a.
is used to correct spherical aberration in refracting telescopes.
b.
is used to correct chromatic aberration in refracting telescopes.
c.
is used to correct spherical aberration in reflecting telescopes.
d.
contains two mirrors and focuses the light back through the primary mirror.
e.
is used to correct chromatic aberration in reflecting telescopes.
 

 26. 

A telescope that suffers from chromatic aberration and has a low light gathering power is most likely
a.
a small diameter refracting telescope.
b.
a small diameter reflecting telescope.
c.
an infrared telescope.
d.
a large diameter refracting telescope.
e.
a large diameter reflecting telescope.
 

 27. 

Long wavelength visible light
a.
will appear red in color to the average human eye.
b.
will have a greater energy than short wavelength visible light.
c.
has a higher frequency than short wavelength visible light.
d.
will have a speed that is faster than short wavelength light.
e.
will appear blue in color to the average human eye.
 

 28. 

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

 29. 

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

Fill In the Blank
Complete each of the folloiwng statements. (5-Points Each)
 

 30. 

The first observations of objects in the solar system that orbited neither the sun nor Earth were made by __________.
 

 

 31. 

Refracting telescopes suffer from __________ aberration.
 

 

 32. 

The __________ Tables were based on a heliocentric model of the universe and used elliptical orbits for the planets.
 

 

 33. 

Uranus' orbital period is 84 years, how far is Uranus from the sun? _____________
 

 

 34. 

A(n) __________ telescope has an objective that is a lens.
 

 

 35. 

The figure below shows a single lens with two rays of white light incident on it from the left. Sketch the paths of the blue, yellow, and red components of each of these rays as to the point where the light from the upper and lower rays would meet.

co035-1.jpg
 

 

Short Answer
Provide a short answer for the following question. (5-Points or More Each)
 

 36. 

Why are nearly all recently built astronomical telescopes reflectors instead of refractors?
 

 37. 

List the advantages the Hubble Space Telescope has over ground-based telescopes.
 

 38. 

How do atmospheric windows limit observations made from Earth's surface?
 

 39. 

If Copernicus overthrew the geocentric universe, what did Kepler overthrow?
 

 40. 

What advantages does a large diameter astronomical telescope have over a telescope of a smaller diameter?
 

 41. 

What are Newton's three laws of motion.

1.__________________________________________________________________


2. __________________________________________________________________


3. __________________________________________________________________
 

 42. 

What are Kepler's three laws?

1.__________________________________________________________________


2. __________________________________________________________________


3. __________________________________________________________________
 

 43. 

Describe the differences between the Ptolemaic, Tychonian and Copernican models of the universe.

Ptolemy_______________________________________________________________


Tycho________________________________________________________________


Copernicus____________________________________________________________
 



 
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