Question 1

If you focused a store-bought telescope at a tree down the street on a clear day, the tree would be viewed as ______________ and _____________.

Accepted Answer

A) right side up, larger 
B) upside down, larger 
C) right side up, smaller 
D) upside down, smaller 
A) right side up, larger 
B) upside down, larger 
C) right side up, smaller 
D) upside down, smaller D

Question 2

Reflecting telescopes are no longer popular with astronomers because they are expensive and suffer from chromatic aberration.

Accepted Answer

A) True 
 B)False  False

Question 3

A particle of light is called a ________________.

Accepted Answer

photon

Question 4

A ______________ is an array of electromagnetic radiation and a ___________ is an instrument that spreads light according to color.

Accepted Answer

A) prism, mirror 
B) lens, grating 
C) rainbow, prism 
D) spectrum, spectrograph 
A) prism, mirror 
B) lens, grating 
C) rainbow, prism 
D) spectrum, spectrograph

Question 5

Which produces a brighter image Choose the best answer.

Accepted Answer

A) a small-diameter telescope 
B) a large-diameter telescope 
C) A very small light collector 
D) None of the other choices are correct. 
A) a small-diameter telescope 
B) a large-diameter telescope 
C) A very small light collector 
D) None of the other choices are correct.

Question 6

Microwaves have ________ wavelengths and ________ energies compared to the visual band.

Accepted Answer

A) shorter, higher 
B) longer, lower 
C) shorter, lower 
D) longer, higher 
A) shorter, higher 
B) longer, lower 
C) shorter, lower 
D) longer, higher

Question 7

A(n) ____________________ telescope has an objective that is a lens.

Accepted Answer

The answer of A(n) ____________________ telescope has an objective that...

Question 8

A telescope that is 1.0 meter in diameter has a focal length of 10 meters. An eyepiece with a focal length of 0.01 meters that is used with this telescope would have a magnification of ____________________

Accepted Answer

The answer of A telescope that is 1.0 meter in...

Question 9

What is the magnification of a telescope and eyepiece if the telescope objective has a focal length of 200 cm and the eyepiece has a focal length of 2.0 cm

Accepted Answer

A) 400 times 
B) 4000 times 
C) 100 times 
D) 1000 times 
E) 40 times 
A) 400 times 
B) 4000 times 
C) 100 times 
D) 1000 times 
E) 40 times

Question 10

The main reason for positioning many radio telescopes across a large area and combining the signals is

Accepted Answer

A) to observe more objects in a shorter amount of time. 
B) provide a backup system if one or more of the telescopes go down. 
C) to produce higher resolution images. 
D) to avoid interference between signals from the separate telescopes. 
E) to account for the motion of objects in the sky as a result of the Earth's rotation. 
A) to observe more objects in a shorter amount of time. 
B) provide a backup system if one or more of the telescopes go down. 
C) to produce higher resolution images. 
D) to avoid interference between signals from the separate telescopes. 
E) to account for the motion of objects in the sky as a result of the Earth's rotation.

Question 11

Interferometry connects two or more separate telescopes only in the optical band of the electromagnetic spectrum.

Accepted Answer

A) True 
 B)False

Question 12

One of the advantages of charge-coupled devices over photographic plates is that a CCD can record bright and faint objects on the same exposure.

Accepted Answer

A) True 
 B)False

Question 13

What statement below best describes the refraction of light

Accepted Answer

A) The absorption of light as it travels through a dense, transparent material. 
B) The spreading out of white light according to wavelength. 
C) The change in direction of a light ray as it passes to a medium of different optical density. 
D) The change in direction of a ray of light as it reflects off a surface. 
A) The absorption of light as it travels through a dense, transparent material. 
B) The spreading out of white light according to wavelength. 
C) The change in direction of a light ray as it passes to a medium of different optical density. 
D) The change in direction of a ray of light as it reflects off a surface.

Question 14

What is the ratio of the light-gathering power of a 5-m telescope to that of a 0.5-m telescope

Accepted Answer

A) 10 
B) 0.1 
C) 0.01 
D) 100 
E) 25 
A) 10 
B) 0.1 
C) 0.01 
D) 100 
E) 25

Question 15

X-rays easily penetrate Earth's atmosphere and reach the ground from space.

Accepted Answer

A) True 
 B)False

Question 16

What is the relationship between color and wavelength for light

Accepted Answer

A) Wavelength increases from blue light to red light. 
B) Wavelength decreases from blue light to red light. 
C) All colors of light have the same wavelength. 
D) Wavelength depends on intensity not color. 
A) Wavelength increases from blue light to red light. 
B) Wavelength decreases from blue light to red light. 
C) All colors of light have the same wavelength. 
D) Wavelength depends on intensity not color.

Question 17

What is the wavelength of the shortest wavelength light visible to the human eye

Accepted Answer

A) 400 nm 
B) 4000 nm 
C) 7000 nm 
D) 700 nm 
E) $3×10^8$ m 
A) 400 nm 
B) 4000 nm 
C) 7000 nm 
D) 700 nm 
E) $3×10^8$ m

Question 18

Radio telescopes which use dishes to gather radio waves are _______ telescopes.

Accepted Answer

A) reflecting 
B) refracting 
C) deflecting 
D) compound 
E) retracting 
A) reflecting 
B) refracting 
C) deflecting 
D) compound 
E) retracting

Question 19

Interferometry is easiest to use with telescopes that observe at very short wavelengths.

Accepted Answer

A) True 
 B)False

Question 20

As shown, a(n) ______________ is added to help focus the red and yellow images.

Accepted Answer

A) chromatic lens 
B) chromatic mirror 
C) achromatic mirror 
D) achromatic lens 
A) chromatic lens 
B) chromatic mirror 
C) achromatic mirror 
D) achromatic lens

If you focused a store-bought telescope at a tree down the street on a clear day, the tree would be viewed as __ and _.

Reflecting telescopes are no longer popular with astronomers because they are expensive and suffer from chromatic aberration.

A particle of light is called a ________________.

A ____ is an array of electromagnetic radiation and a _ is an instrument that spreads light according to color.

Which produces a brighter image Choose the best answer.

Microwaves have wavelengths and energies compared to the visual band.

A(n) ____________________ telescope has an objective that is a lens.

A telescope that is 1.0 meter in diameter has a focal length of 10 meters. An eyepiece with a focal length of 0.01 meters that is used with this telescope would have a magnification of ____________________

What is the magnification of a telescope and eyepiece if the telescope objective has a focal length of 200 cm and the eyepiece has a focal length of 2.0 cm

The main reason for positioning many radio telescopes across a large area and combining the signals is

Interferometry connects two or more separate telescopes only in the optical band of the electromagnetic spectrum.

One of the advantages of charge-coupled devices over photographic plates is that a CCD can record bright and faint objects on the same exposure.

What statement below best describes the refraction of light

What is the ratio of the light-gathering power of a 5-m telescope to that of a 0.5-m telescope

X-rays easily penetrate Earth's atmosphere and reach the ground from space.

What is the relationship between color and wavelength for light

What is the wavelength of the shortest wavelength light visible to the human eye

Radio telescopes which use dishes to gather radio waves are _______ telescopes.

Interferometry is easiest to use with telescopes that observe at very short wavelengths.

As shown, a(n) ______________ is added to help focus the red and yellow images.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 5: Light and Telescopes

If you focused a store-bought telescope at a tree down the street on a clear day, the tree would be viewed as ______________ and _____________.

Reflecting telescopes are no longer popular with astronomers because they are expensive and suffer from chromatic aberration.

A particle of light is called a ________________.

A ______________ is an array of electromagnetic radiation and a ___________ is an instrument that spreads light according to color.

Which produces a brighter image Choose the best answer.

Microwaves have ________ wavelengths and ________ energies compared to the visual band.

A(n) ____________________ telescope has an objective that is a lens.

A telescope that is 1.0 meter in diameter has a focal length of 10 meters. An eyepiece with a focal length of 0.01 meters that is used with this telescope would have a magnification of ____________________

What is the magnification of a telescope and eyepiece if the telescope objective has a focal length of 200 cm and the eyepiece has a focal length of 2.0 cm

The main reason for positioning many radio telescopes across a large area and combining the signals is

Interferometry connects two or more separate telescopes only in the optical band of the electromagnetic spectrum.

One of the advantages of charge-coupled devices over photographic plates is that a CCD can record bright and faint objects on the same exposure.

What statement below best describes the refraction of light

What is the ratio of the light-gathering power of a 5-m telescope to that of a 0.5-m telescope

X-rays easily penetrate Earth's atmosphere and reach the ground from space.

What is the relationship between color and wavelength for light

What is the wavelength of the shortest wavelength light visible to the human eye

Radio telescopes which use dishes to gather radio waves are _______ telescopes.

Interferometry is easiest to use with telescopes that observe at very short wavelengths.

As shown, a(n) ______________ is added to help focus the red and yellow images.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

If you focused a store-bought telescope at a tree down the street on a clear day, the tree would be viewed as __ and _.

A ____ is an array of electromagnetic radiation and a _ is an instrument that spreads light according to color.

Microwaves have wavelengths and energies compared to the visual band.