Question 1

X-rays have shorter wavelength than visible light; therefore,X-rays ________.

Accepted Answer

A)  have lower energy than light waves
B)  are higher energy than light waves
C)  cannot be detected because of their wavelength
D)  pass through materials because their photons are smaller than light photonsE) B) and C)
F) None of the above

Question 2

Discuss the features and characteristics of the Sun? Are they thought to be unique to the Sun or are they typical of other stars? How do any of these structures relate to the process of nuclear fusion which is thought to produce the Sun's energy?

Accepted Answer

The Sun is large and extremely hot with ...

Question 3

The energy from nuclear fusion is produced by the conversion of mass to energy.

Accepted Answer

A) True 
 B)False

Question 4

In the case of light,when a source is moving away,its light appears redder than it actually is.

Accepted Answer

A) True 
 B)False

Question 5

The Sun's energy results from the conversion of hydrogen nuclei into helium nuclei.

Accepted Answer

A) True 
 B)False

Question 6

Light travels 300,000 km/s.Many communications satellites are in geosynchronous orbit at about 36,000 km above the earth's surface.If you talk to your friend on the other side of the world via a geosynchronous satellite using Skype or your phone,what is the minimum time delay there will be between you and your friend in your conversation?

Accepted Answer

A)  8.3 seconds
B)  .12 seconds
C)  .24 seconds
D)  .48 secondsE) C) and D)
F) A) and B)

Question 7

The old fashioned incandescent light bulb produces yellowish colored light by heating tungsten to a very high temperature and the tungsten radiates light peaking in the yellowish-white range.If you wanted a more blue light that was brighter,what would you need to do with a simple filament light bulb?

Accepted Answer

A)  You would have to add more electrical current to raise the filament to a higher temperature,which would make it burn out faster.
B)  You would have to make the filament thicker and add more current to make it glow brighter (for example,a 75w vs 40w bulb) .
C)  You would have to add a layer of some other material that would absorb the longer wavelengths of light.
D)  You couldn't do this; it isn't possible.E) A) and B)
F) All of the above

Question 8

Why would astronomers place an X-ray observatory in space,like the Chandra observatory?

Accepted Answer

A)  to map X-ray emissions from the moon
B)  to map X-ray emissions from the sun
C)  to record X-rays emitted from the big bang; the so called background radiation of the universe
D)  to map deep X-ray emissions from deep space,particularly as a proxy for materials being sucked into black holesE) A) and B)
F) A) and C)

Question 9

The Sun is composed almost entirely of two gases.They are ________ and ________.

Accepted Answer

The answer of The Sun is composed almost entirely of...

Question 10

All of the world's largest telescopes are of the refracting type.

Accepted Answer

A) True 
 B)False

Question 11

The wavelength of red light is shorter than the wavelength of yellow light.

Accepted Answer

A) True 
 B)False

Question 12

What does Einstein's formula e = mc2 have to do with the Sun?

Accepted Answer

A)  It determines the energy released as the solar mass is converted to energy as matter is intensely compressed in its interior.
B)  It determines the energy released when 4 protons are fused to make a helium atom in the interior of the Sun.
C)  It relates to how much energy is carried away from the Sun when mass is ejected from the Sun at the speed c.
D)  The formula has nothing to do with the SunE) B) and C)
F) All of the above

Question 13

The Sun produces energy by converting ________ to energy.

Accepted Answer

The answer of The Sun produces energy by converting ________...

Question 14

The frequency of sunspots and related solar activity is ________.

Accepted Answer

A)  a 22 year cycle
B)  a 7 year cycle
C)  an 11 year cycle
D)  not a regular cycleE) B) and D)
F) C) and D)

Question 15

Bright centers of solar activity are called filaments.

Accepted Answer

A) True 
 B)False

Question 16

Hydrogen "burning" in stars is ________.

Accepted Answer

A)  a chemical reaction that bonds hydrogen to oxygen to make water,which remains a gas because of the extremely high temperatures
B)  an atomic reaction that generates hydrogen by splitting helium atoms
C)  an atomic reaction that fuses 4 protons to make a helium nucleus,releasing energy by converting mass to energy
D)  hydrogen atoms that combine with deuterium atoms to make HD complexes,and this reaction generates immense amounts of energy.E) C) and D)
F) B) and D)

Question 17

A hot (incandescent)gas under low pressure produces a continuous spectrum.

Accepted Answer

A) True 
 B)False

Question 18

A microwave oven is a good example of a familiar device that relies on absorption of electromagnetic waves at fixed frequencies by specific elements or compounds.In this case,water absorbs strongly in the microwave band used by the device,heating water molecules in food.What might a microwave oven imply about measuring microwaves emitted by the Sun on Earth?

Accepted Answer

A)  It is irrelevant; the Sun does not emit microwaves.
B)  Microwaves must be the major reason for global warming.
C)  Microwave radiation will be heavily absorbed in the earth's atmosphere,particular if humidity is high.
D)  Microwaves will never make it to Earth because they will get absorbed by hydrogen between Earth and the Sun.E) B) and D)
F) A) and B)

Question 19

During periods of high solar activity,huge cloudlike structures that appear as great arches extending from the Sun are often produced.These solar features are called ________.

Accepted Answer

A)  quasars
B)  the solar wind
C)  spicules
D)  plages
E)  prominencesF) A) and B)
G) D) and E)

Question 20

The layer of the Sun that radiates most of the light that reaches Earth is called the ________.

Accepted Answer

A)  ionosphere
B)  corona
C)  photosphere
D)  chromosphere
E)  megasphereF) A) and B)
G) All of the above

Exam 23: Light,astronomical Observations,and the Sun

In the case of light,when a source is moving away,its light appears redder than it actually is.

Correct Answer
verified

The frequency of sunspots and related solar activity is ________.

Correct Answer
verified

What does Einstein's formula e = mc2 have to do with the Sun?

Correct Answer
verified

Discuss the features and characteristics of the Sun? Are they thought to be unique to the Sun or are they typical of other stars? How do any of these structures relate to the process of nuclear fusion which is thought to produce the Sun's energy?

Correct Answer
verified
The Sun is large and extremely hot with ...
View Answer

The Sun's energy results from the conversion of hydrogen nuclei into helium nuclei.

Correct Answer
verified

The energy from nuclear fusion is produced by the conversion of mass to energy.

Correct Answer
verified

Why would astronomers place an X-ray observatory in space,like the Chandra observatory?

Correct Answer
verified

Bright centers of solar activity are called filaments.

Correct Answer
verified

Correct Answer
verified

All of the world's largest telescopes are of the refracting type.

Correct Answer
verified

During periods of high solar activity,huge cloudlike structures that appear as great arches extending from the Sun are often produced.These solar features are called ________.

Correct Answer
verified

The layer of the Sun that radiates most of the light that reaches Earth is called the ________.

Correct Answer
verified

The Sun is composed almost entirely of two gases.They are and .

Correct Answer
verified

A hot (incandescent)gas under low pressure produces a continuous spectrum.

Correct Answer
verified

X-rays have shorter wavelength than visible light; therefore,X-rays ________.

Correct Answer
verified

Correct Answer
verified

Hydrogen "burning" in stars is ________.

Correct Answer
verified

The wavelength of red light is shorter than the wavelength of yellow light.

Correct Answer
verified

The Sun produces energy by converting ________ to energy.

Correct Answer
verified

Correct Answer
verified

Exam 23: Light,astronomical Observations,and the Sun

In the case of light,when a source is moving away,its light appears redder than it actually is.

Correct AnswerverifiedShow Answer

The frequency of sunspots and related solar activity is ________.

Correct AnswerverifiedShow Answer

What does Einstein's formula e = mc2 have to do with the Sun?

Correct AnswerverifiedShow Answer

Discuss the features and characteristics of the Sun? Are they thought to be unique to the Sun or are they typical of other stars? How do any of these structures relate to the process of nuclear fusion which is thought to produce the Sun's energy?

Correct AnswerverifiedThe Sun is large and extremely hot with ...View AnswerShow Answer

The Sun's energy results from the conversion of hydrogen nuclei into helium nuclei.

Correct AnswerverifiedShow Answer

The energy from nuclear fusion is produced by the conversion of mass to energy.

Correct AnswerverifiedShow Answer

Why would astronomers place an X-ray observatory in space,like the Chandra observatory?

Correct AnswerverifiedShow Answer

Bright centers of solar activity are called filaments.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

All of the world's largest telescopes are of the refracting type.

Correct AnswerverifiedShow Answer

During periods of high solar activity,huge cloudlike structures that appear as great arches extending from the Sun are often produced.These solar features are called ________.

Correct AnswerverifiedShow Answer

The layer of the Sun that radiates most of the light that reaches Earth is called the ________.

Correct AnswerverifiedShow Answer

The Sun is composed almost entirely of two gases.They are ________ and ________.

Correct AnswerverifiedShow Answer

A hot (incandescent)gas under low pressure produces a continuous spectrum.

Correct AnswerverifiedShow Answer

X-rays have shorter wavelength than visible light; therefore,X-rays ________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Hydrogen "burning" in stars is ________.

Correct AnswerverifiedShow Answer

The wavelength of red light is shorter than the wavelength of yellow light.

Correct AnswerverifiedShow Answer

The Sun produces energy by converting ________ to energy.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The Sun is large and extremely hot with ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The Sun is composed almost entirely of two gases.They are and .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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