Question 1

According to Kirchhoff's first law why do dense, hot bodies create the type of spectrum they do?

Accepted Answer

Kirchhoff's first law states that a dense, hot medium emits light of all wavelengths, creating a continuous spectrum.

Question 2

How does human vision's peak in color sensitivity relate to the Sun?

Accepted Answer

Our eyes are tuned to utilize best the type of radiation our star produces the most of, and yellow lies in the middle of the visible spectrum.

Question 3

What two regions of the electromagnetic spectrum are best utilized by ground- based astronomers, and why?

Accepted Answer

The atmosphere is opaque to most radiation except visible and radio waves.

Question 4

How do sound and light waves differ?

Accepted Answer

Sound waves travel much slower

Question 5

An AM station is broadcasting at 980 kHz, while an FM station up the road is assigned 98 MHz. How do their carrier waves compare?

Accepted Answer

As the frequency of the FM sta

Question 6

The spectral lines of each element are distinctive to that element, whether we are looking at emission or absorption lines.

Accepted Answer

A) True 
 B)False

Question 7

A wave with a period of .01 seconds has a frequency of Hz.

Accepted Answer

The answer of A wave with a period of .01...

Question 8

As a star's temperature increases, the frequency of peak emission also increases.

Accepted Answer

A) True 
 B)False

Question 9

State the relationship between frequency, photon energy, and wavelength.

Accepted Answer

The higher the frequency, the

Question 10

Give and explain an example of the use of the Doppler effect on the highway.

Accepted Answer

The radar gun of a highway pat

Question 11

The Sun's blackbody curve peaks in the portion of the spectrum.

Accepted Answer

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

Question 12

The most energetic photons are

Accepted Answer

A)  infrared. 
B)  radio. 
C)  X- rays. 
D)  gamma rays. 
E)  visible. 
A)  infrared. 
B)  radio. 
C)  X- rays. 
D)  gamma rays. 
E)  visible.

Question 13

In blackbody radiation, the energy is radiated uniformly in every region of the spectrum, so the radiating body appears black in color.

Accepted Answer

A) True 
 B)False

Question 14

How can you determine the distance to a spacecraft from the time it takes its radio signal to reach Earth?

Accepted Answer

In a vacuum, all electromagnetic radiati

Question 15

Fraunhofer was the German astronomer who first noted _ lines in the Sun's spectrum.

Accepted Answer

The answer of Fraunhofer was the German astronomer who first...

Question 16

Newton found that when light passed through a prism, it was dispersed into the component colors. Which bent the least, and why?

Accepted Answer

The red waves are bent less by

Question 17

If the magnetic fields are very strong, such as around sunspots, how are spectral lines affected by the Zeeman effect?

Accepted Answer

A strong magnetic fi

Question 18

Which of these is emitted when an electron falls from a higher to lower orbital?

Accepted Answer

A)  a neutrino 
B)  a positron 
C)  a graviton 
D)  a photon 
E)  another electron 
A)  a neutrino 
B)  a positron 
C)  a graviton 
D)  a photon 
E)  another electron

Question 19

As white light passes through a prism, the red (longer) wavelengths bend less than the blue (shorter) wavelengths, so forming the rainbow of colors.

Accepted Answer

A) True 
 B)False

Question 20

While gravity is always attractive, electromagnetic forces are always repulsive.

Accepted Answer

A) True 
 B)False

According to Kirchhoff's first law why do dense, hot bodies create the type of spectrum they do?

How does human vision's peak in color sensitivity relate to the Sun?

What two regions of the electromagnetic spectrum are best utilized by ground- based astronomers, and why?

How do sound and light waves differ?

An AM station is broadcasting at 980 kHz, while an FM station up the road is assigned 98 MHz. How do their carrier waves compare?

The spectral lines of each element are distinctive to that element, whether we are looking at emission or absorption lines.

A wave with a period of .01 seconds has a frequency of Hz.

As a star's temperature increases, the frequency of peak emission also increases.

State the relationship between frequency, photon energy, and wavelength.

Give and explain an example of the use of the Doppler effect on the highway.

The Sun's blackbody curve peaks in the portion of the spectrum.

The most energetic photons are

In blackbody radiation, the energy is radiated uniformly in every region of the spectrum, so the radiating body appears black in color.

How can you determine the distance to a spacecraft from the time it takes its radio signal to reach Earth?

Fraunhofer was the German astronomer who first noted _ lines in the Sun's spectrum.

Newton found that when light passed through a prism, it was dispersed into the component colors. Which bent the least, and why?

If the magnetic fields are very strong, such as around sunspots, how are spectral lines affected by the Zeeman effect?

Which of these is emitted when an electron falls from a higher to lower orbital?

As white light passes through a prism, the red (longer) wavelengths bend less than the blue (shorter) wavelengths, so forming the rainbow of colors.

While gravity is always attractive, electromagnetic forces are always repulsive.

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

According to Kirchhoff's first law why do dense, hot bodies create the type of spectrum they do?

How does human vision's peak in color sensitivity relate to the Sun?

What two regions of the electromagnetic spectrum are best utilized by ground- based astronomers, and why?

How do sound and light waves differ?

An AM station is broadcasting at 980 kHz, while an FM station up the road is assigned 98 MHz. How do their carrier waves compare?

The spectral lines of each element are distinctive to that element, whether we are looking at emission or absorption lines.

A wave with a period of .01 seconds has a frequency of Hz.

As a star's temperature increases, the frequency of peak emission also increases.

State the relationship between frequency, photon energy, and wavelength.

Give and explain an example of the use of the Doppler effect on the highway.

The Sun's blackbody curve peaks in the portion of the spectrum.

The most energetic photons are

In blackbody radiation, the energy is radiated uniformly in every region of the spectrum, so the radiating body appears black in color.

How can you determine the distance to a spacecraft from the time it takes its radio signal to reach Earth?

Fraunhofer was the German astronomer who first noted _ lines in the Sun's spectrum.

Newton found that when light passed through a prism, it was dispersed into the component colors. Which bent the least, and why?

If the magnetic fields are very strong, such as around sunspots, how are spectral lines affected by the Zeeman effect?

Which of these is emitted when an electron falls from a higher to lower orbital?

As white light passes through a prism, the red (longer) wavelengths bend less than the blue (shorter) wavelengths, so forming the rainbow of colors.

While gravity is always attractive, electromagnetic forces are always repulsive.

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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