Question 1

If a wave's frequency doubles, its wavelength:

Accepted Answer

A) is halved. 
B) is also doubled. 
C) is unchanged, as c is constant. 
D) is now 4 times longer. 
E) becomes 16 times longer. 
A) is halved. 
B) is also doubled. 
C) is unchanged, as c is constant. 
D) is now 4 times longer. 
E) becomes 16 times longer.

Question 2

Light that has all the electrical fields vibrating in the same plane is said to be ________.

Accepted Answer

The answer of Light that has all the electrical fields...

Question 3

If a new wave arrives on shore every half second, then its frequency is 2 Hz.

Accepted Answer

A) True 
 B)False

Question 4

Star A has a temperature 3 times that of star B. Both star A and star B are the same physicalsize. Which statement about star A and star B below is correct?

Accepted Answer

A) Star A is redder and dimmer than star B. 
B) Star A is bluer and dimmer than star B. 
C) Star A is redder and brighter than star B. 
D) Star A is bluer and brighter than star B. 
E) Star A and star B have the same color, but star A is brighter. 
A) Star A is redder and dimmer than star B. 
B) Star A is bluer and dimmer than star B. 
C) Star A is redder and brighter than star B. 
D) Star A is bluer and brighter than star B. 
E) Star A and star B have the same color, but star A is brighter.

Question 5

The frequency of a water wave gives us its height.

Accepted Answer

A) True 
 B)False

Question 6

Colors appear different to us because of their photons' different:

Accepted Answer

A) speeds. 
B) amplitudes. 
C) frequencies. 
D) magnetic fields. 
E) polarization. 
A) speeds. 
B) amplitudes. 
C) frequencies. 
D) magnetic fields. 
E) polarization.

Question 7

According to Wien's Law, if the surface temperature is increased by a factor of 2, its peakwavelength will:

Accepted Answer

A) increase by a factor of 2. 
B) decrease by a factor of 2. 
C) increase by a factor of 4. 
D) decrease by a factor of 4. 
E) not change; Wien's law has nothing to do with peak wavelength. 
A) increase by a factor of 2. 
B) decrease by a factor of 2. 
C) increase by a factor of 4. 
D) decrease by a factor of 4. 
E) not change; Wien's law has nothing to do with peak wavelength.

Question 8

Which type of radiation can be observed well from Earth's surface?

Accepted Answer

A) gamma ray 
B) X-ray 
C) ultraviolet 
D) visible 
E) infrared 
A) gamma ray 
B) X-ray 
C) ultraviolet 
D) visible 
E) infrared

Question 9

X-ray telescopes are located in orbit around the Earth because:

Accepted Answer

A) X-ray telescopes on Earth would have to be too big. 
B) X-ray telescopes are cheap and easy to launch into space. 
C) there are too many X-ray telescopes on Earth, so now they are put in space. 
D) X-rays don't reach the surface of Earth. 
E) the X-rays that come out of the telescopes are dangerous to humans. 
A) X-ray telescopes on Earth would have to be too big. 
B) X-ray telescopes are cheap and easy to launch into space. 
C) there are too many X-ray telescopes on Earth, so now they are put in space. 
D) X-rays don't reach the surface of Earth. 
E) the X-rays that come out of the telescopes are dangerous to humans.

Question 10

The Earth's atmosphere allows astronomers to clearly observe electromagnetic radiation that iseither ________ or ________.

Accepted Answer

visible li

Question 11

You would perceive a change in a visible light wave's amplitude as a change in its color.

Accepted Answer

A) True 
 B)False

Question 12

An observer will measure the wavelength of waves emanating from a source that is movingaway as longer than it really is.

Accepted Answer

A) True 
 B)False

Question 13

What information about a star can be inferred from its Doppler shift?

Accepted Answer

The Doppler shift gi

Question 14

How do sound and light waves differ?

Accepted Answer

Sound waves travel much slower

Question 15

Consider this diagram. Which statement is true?

Accepted Answer

A) The wavelength is 4. 
B) The wavelength is 6. 
C) The wavelength is 8. 
D) The wavelength is 12. 
E) The wavelength cannot be determined from this diagram. 
A) The wavelength is 4. 
B) The wavelength is 6. 
C) The wavelength is 8. 
D) The wavelength is 12. 
E) The wavelength cannot be determined from this diagram.

Question 16

The visible color of electromagnetic radiation that has the shortest wavelength is:

Accepted Answer

A) red. 
B) orange. 
C) green. 
D) blue. 
E) violet. 
A) red. 
B) orange. 
C) green. 
D) blue. 
E) violet.

Question 17

Changing the electric field will have no effect on the magnetic fields of a body.

Accepted Answer

A) True 
 B)False

Question 18

The light from an object moving tangentially (to your left or right)will exhibit:

Accepted Answer

A) a blueshift. 
B) a redshift. 
C) a shift in peak wavelength towards the red. 
D) a shift in peak wavelength towards the blue. 
E) no shift. 
A) a blueshift. 
B) a redshift. 
C) a shift in peak wavelength towards the red. 
D) a shift in peak wavelength towards the blue. 
E) no shift.

Question 19

Both sound waves and electromagnetic radiation:

Accepted Answer

A) travel at the speed of light. 
B) require a medium to move through space. 
C) can move through space without a medium. 
D) transfer energy. 
E) are transverse waves. 
A) travel at the speed of light. 
B) require a medium to move through space. 
C) can move through space without a medium. 
D) transfer energy. 
E) are transverse waves.

Question 20

Star A has a temperature $1 / 2$ hat of star B, but star A is 3 times bigger than star B. Whichstatement below is correct?

Accepted Answer

A) Star A is redder and dimmer than star B. 
B) Star A is bluer and dimmer than star B. 
C) Star A is redder and brighter than star B. 
D) Star A is bluer and brighter than star B. 
E) Star A and star B have the same color, but star A is brighter. 
A) Star A is redder and dimmer than star B. 
B) Star A is bluer and dimmer than star B. 
C) Star A is redder and brighter than star B. 
D) Star A is bluer and brighter than star B. 
E) Star A and star B have the same color, but star A is brighter.

Exam 3: Radiation: Information From the Cosmos

If a wave's frequency doubles, its wavelength:

Light that has all the electrical fields vibrating in the same plane is said to be ________.

If a new wave arrives on shore every half second, then its frequency is 2 Hz.

Star A has a temperature 3 times that of star B. Both star A and star B are the same physicalsize. Which statement about star A and star B below is correct?

The frequency of a water wave gives us its height.

Colors appear different to us because of their photons' different:

According to Wien's Law, if the surface temperature is increased by a factor of 2, its peakwavelength will:

Which type of radiation can be observed well from Earth's surface?

X-ray telescopes are located in orbit around the Earth because:

The Earth's atmosphere allows astronomers to clearly observe electromagnetic radiation that iseither ________ or ________.

You would perceive a change in a visible light wave's amplitude as a change in its color.

An observer will measure the wavelength of waves emanating from a source that is movingaway as longer than it really is.

What information about a star can be inferred from its Doppler shift?

How do sound and light waves differ?

Consider this diagram. Which statement is true?

The visible color of electromagnetic radiation that has the shortest wavelength is:

Changing the electric field will have no effect on the magnetic fields of a body.

The light from an object moving tangentially (to your left or right)will exhibit:

Both sound waves and electromagnetic radiation:

Star A has a temperature 1/21 / 21/2 hat of star B, but star A is 3 times bigger than star B. Whichstatement below is correct?

Charting the Heavens: The Foundations of Astronomy

The Copernican Revolution: The Birth of Modern Science

Spectroscopy: the Inner Workings of Atoms

Telescopes: The Tools of Astronomy

The Solar System: Comparative Planetology and Formation Models

Earth: Our Home in Space

The Moon and Mercury: Scorched and Battered Worlds

Venus: Earths Sister Planet

Mars: a Near Miss for Life

Jupiter: Giant of the Solar System

Saturn: Spectacular Rings and Mysterious Moons

Uranus and Neptune: The Outer Worlds of the Solar System

Solar System Debris: Keys to Our Origin

Exoplanets: Planetary Systems Beyond Our Own

The Sun: Our Parent Star

The Stars: Giants, Dwarfs, and the Main Sequence

The Interstellar Medium: Gas and Dust Among the Stars

Star Formation: a Traumatic Birth

Stellar Evolution: The Life and Death of a Star

Stellar Explosions: Novae, Supernovae, and the Formation of the Elements

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: a Spiral in Space

Galaxies: Building Blocks of the Universe

Galaxies and Dark Matter: The Large-Scale Structure of the Cosmos

Cosmology: The Big Bang and the Fate of the Universe

The Early Universe: Toward the Beginning of Time

Life in the Universe: Are We Alone

Filters

The Earth's atmosphere allows astronomers to clearly observe electromagnetic radiation that iseither or .

Star A has a temperature $1 / 2$ hat of star B, but star A is 3 times bigger than star B. Whichstatement below is correct?