Question 1

A convex lens is located at "B" and a light sources between "D" and "C". Where will an image of the light source form in the sketch?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
A)  A 
B)  B 
C)  C 
D)  D

Question 2

____ penetrate(s) the Earth's atmosphere to reach its surface.

Accepted Answer

A)  X-rays 
B)  Radio waves 
C)  Visible light 
D)  Answers a and b 
E)  Answers b and c 
A)  X-rays 
B)  Radio waves 
C)  Visible light 
D)  Answers a and b 
E)  Answers b and c

Question 3

Which of the following sequences of electromagnetic radiation is correct in order of increasing energy?

Accepted Answer

A)  gamma rays, X-rays, infrared, radio 
B)  radio, microwave, gamma rays, UV 
C)  visible, UV, X-rays, gamma rays 
D)  visible, microwave, radio, infrared 
E)  infrared, visible, radio, X-rays 
A)  gamma rays, X-rays, infrared, radio 
B)  radio, microwave, gamma rays, UV 
C)  visible, UV, X-rays, gamma rays 
D)  visible, microwave, radio, infrared 
E)  infrared, visible, radio, X-rays

Question 4

In which way does a photon of blue light NOT differ from a photon of red light?

Accepted Answer

A)  energy 
B)  speed 
C)  wavelength 
D)  color 
E)  frequency 
A)  energy 
B)  speed 
C)  wavelength 
D)  color 
E)  frequency

Question 5

The largest single-dish radio telescope is

Accepted Answer

A)  suspended on cables in a valley. 
B)  buried deep in a mine underground. 
C)  orbiting in space. 
D)  suspended from balloons in the upper atmosphere. 
A)  suspended on cables in a valley. 
B)  buried deep in a mine underground. 
C)  orbiting in space. 
D)  suspended from balloons in the upper atmosphere.

Question 6

Why were telescopes with very large, thin mirrors not built 50 years ago?

Accepted Answer

The answer of Why were telescopes with very large, thin...

Question 7

The technique of connecting multiple telescopes together to combine the images from each telescope is known as

Accepted Answer

A)  aberation. 
B)  resolving power. 
C)  active optics. 
D)  adaptive optics. 
E)  interferometry. 
A)  aberation. 
B)  resolving power. 
C)  active optics. 
D)  adaptive optics. 
E)  interferometry.

Question 8

Why might astronomers someday establish an observatory on the moon? Why would radio astronomers prefer the far side of the moon for their observatory?

Accepted Answer

Astronomers might someday establish an o

Question 9

In a reflecting telescope the objective is a ____.

Accepted Answer

A)  prism 
B)  mirror 
C)  lens 
D)  diffraction grating 
E)  photographic plate 
A)  prism 
B)  mirror 
C)  lens 
D)  diffraction grating 
E)  photographic plate

Question 10

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 11

The largest optical telescope ever constructed was a refracting telescope.

Accepted Answer

A) True 
 B)False

Question 12

Photons of blue light

Accepted Answer

A)  have a greater energy than photons of red light. 
B)  have a greater energy than photons of ultraviolet light. 
C)  have a lower frequency than photons of red light. 
D)  have a longer wavelength than photons of red light. 
E)  travel at a greater speed than photons of red light. 
A)  have a greater energy than photons of red light. 
B)  have a greater energy than photons of ultraviolet light. 
C)  have a lower frequency than photons of red light. 
D)  have a longer wavelength than photons of red light. 
E)  travel at a greater speed than photons of red light.

Question 13

The main lens or mirror of a telescope is called the ____________________.

Accepted Answer

The answer of The main lens or mirror of a...

Question 14

How do atmospheric windows limit observations made from Earth's surface?

Accepted Answer

The answer of How do atmospheric windows limit observations made...

Question 15

What is the wavelength of light that has a frequency of 3 MHz?

Accepted Answer

A)  9*1014 Hz 
B)  1*1014 m 
C)  9*1014 m 
D)  100 m 
E)  0.01 m 
A)  9*1014 Hz 
B)  1*1014 m 
C)  9*1014 m 
D)  100 m 
E)  0.01 m

Question 16

Which blurs our Earth-based view of celestial objects?

Accepted Answer

A)  the sun 
B)  the moon 
C)  Earth's atmosphere 
A)  the sun 
B)  the moon 
C)  Earth's atmosphere

Question 17

Radio telescopes are important in astronomy because

Accepted Answer

A)  they can detect cool hydrogen. 
B)  they have high magnification. 
C)  the can detect interstellar dust clouds. 
D)  they are very inexpensive to build on tops of mountains. 
E)  they don't need to be as large as optical telescopes to achieve the same resolving power. 
A)  they can detect cool hydrogen. 
B)  they have high magnification. 
C)  the can detect interstellar dust clouds. 
D)  they are very inexpensive to build on tops of mountains. 
E)  they don't need to be as large as optical telescopes to achieve the same resolving power.

Question 18

The technique called ____ uses a high-speed computer to monitor atmospheric distortion and adjust the optics of a telescope to partially compensate for the seeing.

Accepted Answer

A)  photometry 
B)  chromatic aberration 
C)  active optics 
D)  spherical aberration 
E)  adaptive optics 
A)  photometry 
B)  chromatic aberration 
C)  active optics 
D)  spherical aberration 
E)  adaptive optics

Question 19

Light can behave as a particle or as a wave.

Accepted Answer

A) True 
 B)False

Question 20

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

A) True 
 B)False

A convex lens is located at "B" and a light sources between "D" and "C". Where will an image of the light source form in the sketch?

____ penetrate(s) the Earth's atmosphere to reach its surface.

Which of the following sequences of electromagnetic radiation is correct in order of increasing energy?

In which way does a photon of blue light NOT differ from a photon of red light?

The largest single-dish radio telescope is

Why were telescopes with very large, thin mirrors not built 50 years ago?

The technique of connecting multiple telescopes together to combine the images from each telescope is known as

Why might astronomers someday establish an observatory on the moon? Why would radio astronomers prefer the far side of the moon for their observatory?

In a reflecting telescope the objective is a ____.

What is the relationship between color and wavelength for light?

The largest optical telescope ever constructed was a refracting telescope.

Photons of blue light

The main lens or mirror of a telescope is called the ____________________.

How do atmospheric windows limit observations made from Earth's surface?

What is the wavelength of light that has a frequency of 3 MHz?

Which blurs our Earth-based view of celestial objects?

Radio telescopes are important in astronomy because

The technique called ____ uses a high-speed computer to monitor atmospheric distortion and adjust the optics of a telescope to partially compensate for the seeing.

Light can behave as a particle or as a wave.

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 ____________________?

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

A convex lens is located at "B" and a light sources between "D" and "C". Where will an image of the light source form in the sketch?

____ penetrate(s) the Earth's atmosphere to reach its surface.

Which of the following sequences of electromagnetic radiation is correct in order of increasing energy?

In which way does a photon of blue light NOT differ from a photon of red light?

The largest single-dish radio telescope is

Why were telescopes with very large, thin mirrors not built 50 years ago?

The technique of connecting multiple telescopes together to combine the images from each telescope is known as

Why might astronomers someday establish an observatory on the moon? Why would radio astronomers prefer the far side of the moon for their observatory?

In a reflecting telescope the objective is a ____.

What is the relationship between color and wavelength for light?

The largest optical telescope ever constructed was a refracting telescope.

Photons of blue light

The main lens or mirror of a telescope is called the ____________________.

How do atmospheric windows limit observations made from Earth's surface?

What is the wavelength of light that has a frequency of 3 MHz?

Which blurs our Earth-based view of celestial objects?

Radio telescopes are important in astronomy because

The technique called ____ uses a high-speed computer to monitor atmospheric distortion and adjust the optics of a telescope to partially compensate for the seeing.

Light can behave as a particle or as a wave.

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 ____________________?

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