Question 1

X-rays are a form of light and,because of this,will travel at the speed of light.

Accepted Answer

A) True 
 B)False

Question 2

Doppler radar is used in meteorology.What does this measure?

Accepted Answer

A)  Composition of the clouds and atmosphere 
B)  Color of the clouds and atmosphere 
C)  Speeds of the clouds and atmosphere 
D)  Weight of the clouds and atmosphere 
A)  Composition of the clouds and atmosphere 
B)  Color of the clouds and atmosphere 
C)  Speeds of the clouds and atmosphere 
D)  Weight of the clouds and atmosphere

Question 3

The observed change in wavelength due to the Doppler effect occurs

Accepted Answer

A)  whenever the light source is moving with respect to the observer (regardless of direction). 
B)  only when the light source has a radial velocity (toward or away from the observer). 
C)  only when the temperature of an object changes. 
D)  only when the light source has a proper motion (across the line of sight). 
A)  whenever the light source is moving with respect to the observer (regardless of direction). 
B)  only when the light source has a radial velocity (toward or away from the observer). 
C)  only when the temperature of an object changes. 
D)  only when the light source has a proper motion (across the line of sight).

Question 4

The light-gathering power of a telescope is related directly to the

Accepted Answer

A)  image quality of its optics (resolution). 
B)  area of its primary mirror or lens. 
C)  focal length of its primary mirror or lens. 
D)  ratio of the focal lengths of its primary element (mirror or lens)and its eyepiece. 
A)  image quality of its optics (resolution). 
B)  area of its primary mirror or lens. 
C)  focal length of its primary mirror or lens. 
D)  ratio of the focal lengths of its primary element (mirror or lens)and its eyepiece.

Question 5

Chemical pollution often results in large numbers of very small particles being emitted into the atmosphere.What effect,if any,will this have on the color of the sunset?

Accepted Answer

A)  It should have no effect. 
B)  It should make the sunset look less red. 
C)  It should make the sunset look more red. 
D)  Its effect depends on the color of the pollutants. 
A)  It should have no effect. 
B)  It should make the sunset look less red. 
C)  It should make the sunset look more red. 
D)  Its effect depends on the color of the pollutants.

Question 6

If someone says they are using a 12-inch telescope,to what dimension of the telescope's size are they most likely referring?

Accepted Answer

A)  Focal length 
B)  Diameter 
C)  Radius 
D)  Length of the tube 
A)  Focal length 
B)  Diameter 
C)  Radius 
D)  Length of the tube

Question 7

The total energy emitted per unit time at all wavelengths from an object increases by what factor if its temperature is increased by a factor of 3 (e.g. ,from room temperature to 900 K)?

Accepted Answer

A)  27 
B)  81 
C)  3 
D)  9 
A)  27 
B)  81 
C)  3 
D)  9

Question 8

The two ranges of electromagnetic radiation for which Earth's atmosphere is reasonably transparent are

Accepted Answer

A)  UV and radio waves. 
B)  visible and far-infrared radiation. 
C)  X-rays and visible radiation. 
D)  visible and radio radiation. 
A)  UV and radio waves. 
B)  visible and far-infrared radiation. 
C)  X-rays and visible radiation. 
D)  visible and radio radiation.

Question 9

The major reason astronomers seek funds to build larger telescopes is to

Accepted Answer

A)  bring stars closer to Earth. 
B)  measure a wider spectrum of light from stars. 
C)  provide magnified images of stars. 
D)  collect more light from distant objects. 
A)  bring stars closer to Earth. 
B)  measure a wider spectrum of light from stars. 
C)  provide magnified images of stars. 
D)  collect more light from distant objects.

Question 10

The frequency associated with orange light compared to that of violet light is

Accepted Answer

A)  the same,because both orange and violet are part of the visible light spectrum. 
B)  lower. 
C)  higher. 
D)  cannot be determined from the information given. 
A)  the same,because both orange and violet are part of the visible light spectrum. 
B)  lower. 
C)  higher. 
D)  cannot be determined from the information given.

Question 11

For which of these wavelengths would it not be as beneficial to put a telescope in orbit as a space telescope to detect because of its transparency through Earth's atmosphere.

Accepted Answer

A)  Ultraviolet 
B)  X-Ray 
C)  Gamma rays 
D)  Radio 
A)  Ultraviolet 
B)  X-Ray 
C)  Gamma rays 
D)  Radio

Question 12

What are the different types of spectra,as described by Kirchhoff's laws,and what kinds of objects produce each?

Accepted Answer

The three different types of spectra are

Question 13

Why is the study of spectroscopy so important for the study of astronomy?

Accepted Answer

Spectroscopy,the study of uniq

Question 14

Who first demonstrated that light does NOT travel at infinite speed?

Accepted Answer

A)  Isaac Newton 
B)  Ole Rømer 
C)  James Clerk Maxwell 
D)  Joseph von Fraunhofer 
A)  Isaac Newton 
B)  Ole Rømer 
C)  James Clerk Maxwell 
D)  Joseph von Fraunhofer

Question 15

The speed of light is 3 × 108 m/s.If the frequency of a radio wave from an AM station is 900 kilohertz (or 900,000 Hertz),what is its wavelength?

Accepted Answer

A)  About 0.003 meters 
B)  About 27,000 meters 
C)  About 333 meters 
D)  About 900,000 meters 
A)  About 0.003 meters 
B)  About 27,000 meters 
C)  About 333 meters 
D)  About 900,000 meters

Question 16

Who was the first person to suggest that light is an electromagnetic wave?

Accepted Answer

A)  Albert Einstein 
B)  Thomas Young 
C)  Isaac Newton 
D)  James Clerk Maxwell 
A)  Albert Einstein 
B)  Thomas Young 
C)  Isaac Newton 
D)  James Clerk Maxwell

Question 17

The atmosphere is transparent to most radio waves.

Accepted Answer

A) True 
 B)False

Question 18

By what factor is the amount of light gathered by the 10-m diameter Keck telescope on Mauna Kea,Hawaii,greater than that gathered by the 2.5-m diameter Mount Wilson telescope?

Accepted Answer

A)  4 
B)  16 
C)  256 
D)  2 
A)  4 
B)  16 
C)  256 
D)  2

Question 19

What is the wavelength of radiation emitted by an FM radio station transmitting at a frequency of 100 MHz (or 108 Hz)?

Accepted Answer

A)  300 m 
B)  0.03 m 
C)  1 m 
D)  3 m 
A)  300 m 
B)  0.03 m 
C)  1 m 
D)  3 m

Question 20

Infrared astronomy is especially important for studying what kind of objects?

Accepted Answer

A)  Planets around stars other than the Sun 
B)  Black holes at the centers of galaxies 
C)  Large stars when they explode 
D)  Newborn stars hidden in dusty gas clouds 
A)  Planets around stars other than the Sun 
B)  Black holes at the centers of galaxies 
C)  Large stars when they explode 
D)  Newborn stars hidden in dusty gas clouds

X-rays are a form of light and,because of this,will travel at the speed of light.

Doppler radar is used in meteorology.What does this measure?

The observed change in wavelength due to the Doppler effect occurs

The light-gathering power of a telescope is related directly to the

Chemical pollution often results in large numbers of very small particles being emitted into the atmosphere.What effect,if any,will this have on the color of the sunset?

If someone says they are using a 12-inch telescope,to what dimension of the telescope's size are they most likely referring?

The total energy emitted per unit time at all wavelengths from an object increases by what factor if its temperature is increased by a factor of 3 (e.g. ,from room temperature to 900 K)?

The two ranges of electromagnetic radiation for which Earth's atmosphere is reasonably transparent are

The major reason astronomers seek funds to build larger telescopes is to

The frequency associated with orange light compared to that of violet light is

For which of these wavelengths would it not be as beneficial to put a telescope in orbit as a space telescope to detect because of its transparency through Earth's atmosphere.

What are the different types of spectra,as described by Kirchhoff's laws,and what kinds of objects produce each?

Why is the study of spectroscopy so important for the study of astronomy?

Who first demonstrated that light does NOT travel at infinite speed?

The speed of light is 3 × 10⁸m/s.If the frequency of a radio wave from an AM station is 900 kilohertz (or 900,000 Hertz),what is its wavelength?

Who was the first person to suggest that light is an electromagnetic wave?

The atmosphere is transparent to most radio waves.

By what factor is the amount of light gathered by the 10-m diameter Keck telescope on Mauna Kea,Hawaii,greater than that gathered by the 2.5-m diameter Mount Wilson telescope?

What is the wavelength of radiation emitted by an FM radio station transmitting at a frequency of 100 MHz (or 10⁸ Hz)?

Infrared astronomy is especially important for studying what kind of objects?

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

Filters

Exam 2: Decoding the Hidden Messages in Starlight

X-rays are a form of light and,because of this,will travel at the speed of light.

Doppler radar is used in meteorology.What does this measure?

The observed change in wavelength due to the Doppler effect occurs

The light-gathering power of a telescope is related directly to the

Chemical pollution often results in large numbers of very small particles being emitted into the atmosphere.What effect,if any,will this have on the color of the sunset?

If someone says they are using a 12-inch telescope,to what dimension of the telescope's size are they most likely referring?

The total energy emitted per unit time at all wavelengths from an object increases by what factor if its temperature is increased by a factor of 3 (e.g. ,from room temperature to 900 K)?

The two ranges of electromagnetic radiation for which Earth's atmosphere is reasonably transparent are

The major reason astronomers seek funds to build larger telescopes is to

The frequency associated with orange light compared to that of violet light is

For which of these wavelengths would it not be as beneficial to put a telescope in orbit as a space telescope to detect because of its transparency through Earth's atmosphere.

What are the different types of spectra,as described by Kirchhoff's laws,and what kinds of objects produce each?

Why is the study of spectroscopy so important for the study of astronomy?

Who first demonstrated that light does NOT travel at infinite speed?

The speed of light is 3 × 108 m/s.If the frequency of a radio wave from an AM station is 900 kilohertz (or 900,000 Hertz),what is its wavelength?

Who was the first person to suggest that light is an electromagnetic wave?

The atmosphere is transparent to most radio waves.

By what factor is the amount of light gathered by the 10-m diameter Keck telescope on Mauna Kea,Hawaii,greater than that gathered by the 2.5-m diameter Mount Wilson telescope?

What is the wavelength of radiation emitted by an FM radio station transmitting at a frequency of 100 MHz (or 108 Hz)?

Infrared astronomy is especially important for studying what kind of objects?

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

Filters

The speed of light is 3 × 10⁸m/s.If the frequency of a radio wave from an AM station is 900 kilohertz (or 900,000 Hertz),what is its wavelength?

What is the wavelength of radiation emitted by an FM radio station transmitting at a frequency of 100 MHz (or 10⁸ Hz)?