Question 1

The radiation our eyes are most sensitive to lies in the color:

Accepted Answer

A) red at 6563 Angstroms. 
B) yellow-green at about 550 nm. 
C) violet at 7,000 Angstroms. 
D) blue at 4,321 nanometers. 
E) black at 227 nm. 
A) red at 6563 Angstroms. 
B) yellow-green at about 550 nm. 
C) violet at 7,000 Angstroms. 
D) blue at 4,321 nanometers. 
E) black at 227 nm. B

Question 2

How can the Doppler Effect be used to determine if a storm is forming into a tornado?

Accepted Answer

Radar can determine the distance to a storm cloud. Since a tornado rotates (veryrapidly), Doppler radar will measure the difference in velocity between the two sides of thestorm to determine if it is rotating.

Question 3

Stars that appear blue or white in color are ________ than our yellow Sun.

Accepted Answer

hotter

Question 4

Which form of electromagnetic radiation is absorbed by carbon dioxide and water vapor inour atmosphere?

Accepted Answer

A) visible light 
B) ultraviolet 
C) infrared 
D) radio 
E) gamma rays 
A) visible light 
B) ultraviolet 
C) infrared 
D) radio 
E) gamma rays

Question 5

In a vacuum, X-rays travel faster than radio waves.

Accepted Answer

A) True 
 B)False

Question 6

Stefan's Law says:

Accepted Answer

A) the hotter a star's surface, the bluer it looks to us. 
B)  $\mathrm { E } = \mathrm { mc } \mathrm { } ^ { 2 }$ 
C) the energy radiated by a blackbody is proportional to T3. 
D) that if the Sun's temperature were doubled, it would give off 16X more energy. 
E) that doubling the star's temperature would also double its peak wavelength. 
A) the hotter a star's surface, the bluer it looks to us. 
B)  $\mathrm { E } = \mathrm { mc } \mathrm { } ^ { 2 }$ 
C) the energy radiated by a blackbody is proportional to T3. 
D) that if the Sun's temperature were doubled, it would give off 16X more energy. 
E) that doubling the star's temperature would also double its peak wavelength.

Question 7

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

Accepted Answer

In vacuum, all electromagnetic radiation

Question 8

As they move through space, the vibrating electrical and magnetic fields of a light wave mustmove perpendicular to each other.

Accepted Answer

A) True 
 B)False

Question 9

Observations in the X-ray portion of the spectrum are routinely done from the surface of theEarth.

Accepted Answer

A) True 
 B)False

Question 10

Doubling the temperature of a blackbody will double the total energy it radiates.

Accepted Answer

A) True 
 B)False

Question 11

The Earth's ionosphere partially blocks which form of electromagnetic radiation?

Accepted Answer

A) gamma rays 
B) ultraviolet 
C) visible light 
D) infrared 
E) radio 
A) gamma rays 
B) ultraviolet 
C) visible light 
D) infrared 
E) radio

Question 12

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

Accepted Answer

The Doppler "gun" can focus on

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

Which type of electromagnetic radiation has the shortest wavelength?

Accepted Answer

A) radio 
B) infrared 
C) visible light 
D) ultraviolet 
E) gamma ray 
A) radio 
B) infrared 
C) visible light 
D) ultraviolet 
E) gamma ray

Question 15

Stars like our Sun emit most of their light in which part of the electromagnetic spectrum?

Accepted Answer

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

Question 16

Increasing the temperature of a blackbody by a factor of 2 will increase its energy by a factorof:

Accepted Answer

A)  $\sqrt { 2 }$ 
B) 4. 
C) 8. 
D) 16. 
E) 32. 
A)  $\sqrt { 2 }$ 
B) 4. 
C) 8. 
D) 16. 
E) 32.

Question 17

Why can't long-wavelength radio observations be made from Earth's surface?

Accepted Answer

Earth's ionosphere reflects el

Question 18

No one can hear you scream (or fire a weapon)in space, regardless of the Hollywood specialeffects. Explain why.

Accepted Answer

Sound waves must travel though

Question 19

The type of radiation that is most able to damage living cells is ultraviolet.

Accepted Answer

A) True 
 B)False

Question 20

The type of electromagnetic radiation that is most able to damage living cells is ________.

Accepted Answer

The answer of The type of electromagnetic radiation that is...

Exam 3: Radiation: Information From the Cosmos

The radiation our eyes are most sensitive to lies in the color:

How can the Doppler Effect be used to determine if a storm is forming into a tornado?

Stars that appear blue or white in color are ________ than our yellow Sun.

Which form of electromagnetic radiation is absorbed by carbon dioxide and water vapor inour atmosphere?

In a vacuum, X-rays travel faster than radio waves.

Stefan's Law says:

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

As they move through space, the vibrating electrical and magnetic fields of a light wave mustmove perpendicular to each other.

Observations in the X-ray portion of the spectrum are routinely done from the surface of theEarth.

Doubling the temperature of a blackbody will double the total energy it radiates.

The Earth's ionosphere partially blocks which form of electromagnetic radiation?

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

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

Which type of electromagnetic radiation has the shortest wavelength?

Stars like our Sun emit most of their light in which part of the electromagnetic spectrum?

Increasing the temperature of a blackbody by a factor of 2 will increase its energy by a factorof:

Why can't long-wavelength radio observations be made from Earth's surface?

No one can hear you scream (or fire a weapon)in space, regardless of the Hollywood specialeffects. Explain why.

The type of radiation that is most able to damage living cells is ultraviolet.

The type of electromagnetic radiation that is most able to damage living cells is ________.

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