Exam 2: Decoding the Hidden Messages in Starlight

Galileo was able to determine a precise value of the speed of light by using a technique that involved shuttered lanterns and his assistant on a different hill of known distance.

(True/False)

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Question 21

When an object is moving toward you,the visible radiation that it emits is Doppler shifted toward the

(Multiple Choice)

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Question 22

The wavelength associated with blue light compared to that of red light is

(Multiple Choice)

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Question 23

Spectral lines are of particular importance in astronomy because

(Multiple Choice)

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Question 24

The light gathering capability of a telescope depends mainly on its

(Multiple Choice)

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Question 25

What causes the Doppler effect and why is it so important for the study of astronomy?

(Essay)

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Question 26

All objects,including stars,emit light

(Multiple Choice)

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Question 27

Who performed an experiment with an assistant at night on two hilltops a known distance apart with lanterns to try to measure the speed of light?

(Multiple Choice)

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Question 28

How can you increase the magnification of a refracting telescope without decreasing the light-gathering power?

(Multiple Choice)

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Question 29

Which of the following objects is most likely to be studied in infrared light?

(Multiple Choice)

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Question 30

When an electron jumps from a higher energy level to a lower one,the atom will

(Multiple Choice)

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Question 31

Light has properties of both waves and particles.

(True/False)

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Question 32

The energy flux F from a star is the

(Multiple Choice)

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Question 33

Around 1800,William Herschel passed light through a prism and discovered that part of the NONVISIBLE radiation in the resulting spectrum would raise the temperature of a thermometer.This portion of the electromagnetic spectrum is

(Multiple Choice)

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Question 34

The "color" or wavelength of maximum emission of radiation for a hot,solid body (or a dense gas such as a star)when the body cools from a temperature of several thousand degrees

(Multiple Choice)

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Question 35

An amateur astronomer has a telescope with an objective lens that measures 20 cm in diameter and 100 cm in focal length.What focal length of eyepiece should he or she choose in order to obtain a magnification of 50× ("50 power")?

(Multiple Choice)

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Question 36

What kind of light has the lowest energy?

(Multiple Choice)

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Question 37

The frequency associated with blue light compared to that of red light is

(Multiple Choice)

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Question 38

How do adaptive optics allow telescopes to achieve such high resolution?

(Essay)

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Question 39

A typical refracting telescope is made up of

(Multiple Choice)

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Question 40

Showing 21 - 40 of 124

Galileo was able to determine a precise value of the speed of light by using a technique that involved shuttered lanterns and his assistant on a different hill of known distance.

When an object is moving toward you,the visible radiation that it emits is Doppler shifted toward the

The wavelength associated with blue light compared to that of red light is

Spectral lines are of particular importance in astronomy because

The light gathering capability of a telescope depends mainly on its

What causes the Doppler effect and why is it so important for the study of astronomy?

All objects,including stars,emit light

Who performed an experiment with an assistant at night on two hilltops a known distance apart with lanterns to try to measure the speed of light?

How can you increase the magnification of a refracting telescope without decreasing the light-gathering power?

Which of the following objects is most likely to be studied in infrared light?

When an electron jumps from a higher energy level to a lower one,the atom will

Light has properties of both waves and particles.

The energy flux F from a star is the

Around 1800,William Herschel passed light through a prism and discovered that part of the NONVISIBLE radiation in the resulting spectrum would raise the temperature of a thermometer.This portion of the electromagnetic spectrum is

The "color" or wavelength of maximum emission of radiation for a hot,solid body (or a dense gas such as a star)when the body cools from a temperature of several thousand degrees

An amateur astronomer has a telescope with an objective lens that measures 20 cm in diameter and 100 cm in focal length.What focal length of eyepiece should he or she choose in order to obtain a magnification of 50× ("50 power")?

What kind of light has the lowest energy?

The frequency associated with blue light compared to that of red light is

How do adaptive optics allow telescopes to achieve such high resolution?

A typical refracting telescope is made up of

Predicting the Motions of the Stars, Sun, and Moon

Analyzing Scales and Motions of the Universe

Exploring Our Evolving Solar System

Uncovering Earths Systems

Exploring Terrestrial Surface Processes and Atmospheres

Observing the Dynamic Giant Planets

Looking for Life Beyond Earth

Probing the Dynamic Sun

Observing Properties of Distant Stars

Inferring Patterns in Star Life Cycles

Predicting the Violent End of the Largest Stars

Exploring Our Galaxy

Investigating Other Galaxies

Observing the Evolution of the Universe

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