Question 1

The Doppler effect can reveal the rotation speed of a star by the splitting of the spectral lines.

Accepted Answer

A) True 
 B)False

Question 2

If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then

Accepted Answer

A)  the source is getting 1% hotter as we watch. 
B)  the source is approaching us at 0.1% of the speed of light. 
C)  the source is receding from us at 10% of the speed of light. 
D)  the source is approaching us at 1% of the speed of light. 
E)  the source is spinning very rapidly, at 1% of the speed of light. 
A)  the source is getting 1% hotter as we watch. 
B)  the source is approaching us at 0.1% of the speed of light. 
C)  the source is receding from us at 10% of the speed of light. 
D)  the source is approaching us at 1% of the speed of light. 
E)  the source is spinning very rapidly, at 1% of the speed of light.

Question 3

According to the Zeeman effect, the splitting of a sunspot's spectral lines is due to

Accepted Answer

A)  temperature variations. 
B)  a Doppler shift. 
C)  their radial velocity. 
D)  their rapid rotation. 
E)  their magnetic fields. 
A)  temperature variations. 
B)  a Doppler shift. 
C)  their radial velocity. 
D)  their rapid rotation. 
E)  their magnetic fields.

Question 4

Increasing the temperature of a blackbody by a factor of 3 will increase its energy by a factor of

Accepted Answer

A)  3. 
B)  6. 
C)  9. 
D)  12. 
E)  81. 
A)  3. 
B)  6. 
C)  9. 
D)  12. 
E)  81.

Question 5

An absorption line spectrum, with dark lines crossing the rainbow of the continuum, is produced by a low- density hot gas.

Accepted Answer

A) True 
 B)False

Question 6

The total energy radiated by a blackbody depends on

Accepted Answer

A)  the fourth root of its temperature. 
B)  the cube of its temperature. 
C)  the square of its temperature. 
D)  the fourth power of its temperature. 
E)  the square root of its temperature. 
A)  the fourth root of its temperature. 
B)  the cube of its temperature. 
C)  the square of its temperature. 
D)  the fourth power of its temperature. 
E)  the square root of its temperature.

Question 7

The product of the wavelength times the frequency of a wave is its .

Accepted Answer

The answer of The product of the wavelength times the...

Question 8

If a source of light is approaching us at 3,000 km/sec, then all its waves are

Accepted Answer

A)  blueshifted by 1%. 
B)  blueshifted out of the visible spectrum into the ultraviolet. 
C)  redshifted by 1%. 
D)  redshifted out of the visible into the infrared. 
E)  not affected, as c is constant regardless of the direction of motion. 
A)  blueshifted by 1%. 
B)  blueshifted out of the visible spectrum into the ultraviolet. 
C)  redshifted by 1%. 
D)  redshifted out of the visible into the infrared. 
E)  not affected, as c is constant regardless of the direction of motion.

Question 9

What is the name of the temperature scale that places zero at the point where all atomic and molecular motion ceases?

Accepted Answer

A)  Ransom 
B)  Fahrenheit 
C)  Kelvin 
D)  Centigrade 
E)  Celsius 
A)  Ransom 
B)  Fahrenheit 
C)  Kelvin 
D)  Centigrade 
E)  Celsius

Question 10

Why can't we be certain that the Andromeda Galaxy exists today?

Accepted Answer

Since it lies 2.5 million ligh

Question 11

Consider this diagram. Which statement is true?

Accepted Answer

A)  The amplitude is 8 and the wavelength is 6. 
B)  The amplitude is 8 and the wavelength is 12. 
C)  The amplitude is 6 and the wavelength is 4. 
D)  The amplitude is 4 and the wavelength is 12. 
E)  The amplitude is 4 and the wavelength is 6. 
A)  The amplitude is 8 and the wavelength is 6. 
B)  The amplitude is 8 and the wavelength is 12. 
C)  The amplitude is 6 and the wavelength is 4. 
D)  The amplitude is 4 and the wavelength is 12. 
E)  The amplitude is 4 and the wavelength is 6.

Question 12

The two forms of electromagnetic (E- M) radiation that experience the least atmospheric opacity are

Accepted Answer

A)  microwaves and radio waves. 
B)  X and gamma radiation. 
C)  ultraviolet and infrared waves. 
D)  visible light and infrared waves. 
E)  visible light and radio waves. 
A)  microwaves and radio waves. 
B)  X and gamma radiation. 
C)  ultraviolet and infrared waves. 
D)  visible light and infrared waves. 
E)  visible light and radio waves.

Question 13

A frequency of one hundred means the wave is vibrating one hundred million times per second; this is a typical carrier frequency for FM (frequency modulation) radio.

Accepted Answer

A)  millihertz 
B)  gigahertz 
C)  hertz 
D)  megahertz 
E)  kilohertz 
A)  millihertz 
B)  gigahertz 
C)  hertz 
D)  megahertz 
E)  kilohertz

Question 14

A blue star has a higher surface temperature than a red star.

Accepted Answer

A) True 
 B)False

Question 15

Contrast the speeds of sound and light in watching a flash of lightning, then listening for the thunder to follow.

Accepted Answer

Light travels at 300,000 km/sec, so the

Question 16

Give an example of the Doppler effect being used in a baseball game.

Accepted Answer

The Doppler "gun" can focus on

Question 17

Which of these is NOT a form of electromagnetic radiation?

Accepted Answer

A)  X- rays in the doctor's office 
B)  DC current from your car battery 
C)  ultraviolet causing a suntan 
D)  light from your camp fire 
E)  radio signals 
A)  X- rays in the doctor's office 
B)  DC current from your car battery 
C)  ultraviolet causing a suntan 
D)  light from your camp fire 
E)  radio signals

Question 18

An electron has a electric charge.

Accepted Answer

The answer of An electron has a electric charge....

Question 19

The speed of light in a vacuum is

Accepted Answer

A)  186,000 miles per hour. 
B)  h = E/c. 
C)  300,000 km/sec. 
D)  768 km/hour. 
E)  none of the above. 
A)  186,000 miles per hour. 
B)  h = E/c. 
C)  300,000 km/sec. 
D)  768 km/hour. 
E)  none of the above.

Question 20

Radio waves, visible light, and X- rays are all types of electromagnetic radiation.

Accepted Answer

A) True 
 B)False

The Doppler effect can reveal the rotation speed of a star by the splitting of the spectral lines.

If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then

According to the Zeeman effect, the splitting of a sunspot's spectral lines is due to

Increasing the temperature of a blackbody by a factor of 3 will increase its energy by a factor of

An absorption line spectrum, with dark lines crossing the rainbow of the continuum, is produced by a low- density hot gas.

The total energy radiated by a blackbody depends on

The product of the wavelength times the frequency of a wave is its .

If a source of light is approaching us at 3,000 km/sec, then all its waves are

What is the name of the temperature scale that places zero at the point where all atomic and molecular motion ceases?

Why can't we be certain that the Andromeda Galaxy exists today?

Consider this diagram. Which statement is true?

The two forms of electromagnetic (E- M) radiation that experience the least atmospheric opacity are

A frequency of one hundred means the wave is vibrating one hundred million times per second; this is a typical carrier frequency for FM (frequency modulation) radio.

A blue star has a higher surface temperature than a red star.

Contrast the speeds of sound and light in watching a flash of lightning, then listening for the thunder to follow.

Give an example of the Doppler effect being used in a baseball game.

Which of these is NOT a form of electromagnetic radiation?

An electron has a electric charge.

The speed of light in a vacuum is

Radio waves, visible light, and X- rays are all types of electromagnetic radiation.

Charting the Heavens: the Foundations of Astronomy

The Copernican Revolution: the Birth of Modern Science

Telescopes: the Tools of Astronomy

The Solar System: Interplanetary Matter and the Birth of the Planets

Earth and Its Moon: Our Cosmic Backyard

The Terrestrial Planets: a Study in Contrasts

The Jovian Planets: Giants of the Solar System

Moons, Rings, and Plutoids: Small Worlds Among Giants

The Sun: Our Parent Star

Measuring the Stars: Giants, Dwarfs, and the Main Sequence

The Interstellar Medium: Star Formation in the Milky Way

Stellar Evolution: the Lives and Deaths of Stars

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: a Spiral in Space

Normal and Active Galaxies: Building Blocks of the Universe

Hubbles Law and Dark Matter: the Large-Scale Structure of the Cosmos

Cosmology: the Big Bang and the Fate of the Universe

Life in the Universe: Are We Alone

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Exam 3: Light and Matter: the Inner Workings of the Cosmos

The Doppler effect can reveal the rotation speed of a star by the splitting of the spectral lines.

If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then

According to the Zeeman effect, the splitting of a sunspot's spectral lines is due to

Increasing the temperature of a blackbody by a factor of 3 will increase its energy by a factor of

An absorption line spectrum, with dark lines crossing the rainbow of the continuum, is produced by a low- density hot gas.

The total energy radiated by a blackbody depends on

The product of the wavelength times the frequency of a wave is its .

If a source of light is approaching us at 3,000 km/sec, then all its waves are

What is the name of the temperature scale that places zero at the point where all atomic and molecular motion ceases?

Why can't we be certain that the Andromeda Galaxy exists today?

Consider this diagram. Which statement is true?

The two forms of electromagnetic (E- M) radiation that experience the least atmospheric opacity are

A frequency of one hundred means the wave is vibrating one hundred million times per second; this is a typical carrier frequency for FM (frequency modulation) radio.

A blue star has a higher surface temperature than a red star.

Contrast the speeds of sound and light in watching a flash of lightning, then listening for the thunder to follow.

Give an example of the Doppler effect being used in a baseball game.

Which of these is NOT a form of electromagnetic radiation?

An electron has a electric charge.

The speed of light in a vacuum is

Radio waves, visible light, and X- rays are all types of electromagnetic radiation.

Charting the Heavens: the Foundations of Astronomy

The Copernican Revolution: the Birth of Modern Science

Telescopes: the Tools of Astronomy

The Solar System: Interplanetary Matter and the Birth of the Planets

Earth and Its Moon: Our Cosmic Backyard

The Terrestrial Planets: a Study in Contrasts

The Jovian Planets: Giants of the Solar System

Moons, Rings, and Plutoids: Small Worlds Among Giants

The Sun: Our Parent Star

Measuring the Stars: Giants, Dwarfs, and the Main Sequence

The Interstellar Medium: Star Formation in the Milky Way

Stellar Evolution: the Lives and Deaths of Stars

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: a Spiral in Space

Normal and Active Galaxies: Building Blocks of the Universe

Hubbles Law and Dark Matter: the Large-Scale Structure of the Cosmos

Cosmology: the Big Bang and the Fate of the Universe

Life in the Universe: Are We Alone

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