Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

How do radio interferometers greatly enhance resolution in radio wavelengths?

Accepted Answer

Hooking two or more radio dish

Question 3

In an atom, electrons can have only specific, allowed orbital energies.

Accepted Answer

A) True 
 B)False

Question 4

The shorter a wave's wavelength, the greater its energy.

Accepted Answer

A) True 
 B)False

Question 5

Compared to optical telescopes, radio telescopes are built large because

Accepted Answer

A)  they're less expensive to make than optical telescopes. 
B)  radio photons don't carry much energy. 
C)  atmospheric turbulence is more of a problem. 
D)  radio sources are harder to find. 
E)  radio waves are absorbed by the atmosphere. 
A)  they're less expensive to make than optical telescopes. 
B)  radio photons don't carry much energy. 
C)  atmospheric turbulence is more of a problem. 
D)  radio sources are harder to find. 
E)  radio waves are absorbed by the atmosphere.

Question 6

A blue star has a higher surface temperature than a red star.

Accepted Answer

A) True 
 B)False

Question 7

What is the light-gathering power of an 8-inch telescope compared to a 4-inch telescope?

Accepted Answer

A)  2× better 
B)  4× better 
C)  8× better 
D)  16× better 
E)  32× better 
A)  2× better 
B)  4× better 
C)  8× better 
D)  16× better 
E)  32× better

Question 8

Why is the angular resolution of radio telescopes much worse than that of smaller optical telescopes?

Accepted Answer

Radio waves are much longer in

Question 9

An X-ray photon has more energy than a visible photon.

Accepted Answer

A) True 
 B)False

Question 10

Because the changes in energy levels happen in discrete steps, we refer to these as ________ leaps.

Accepted Answer

The answer of Because the changes in energy levels happen...

Question 11

What is white light? Why do we perceive different colors with a prism?

Accepted Answer

White light is composed of all the color

Question 12

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 13

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

Accepted Answer

The answer of The Sun's blackbody curve peaks in the...

Question 14

Compare how doubling the diameter of a mirror will affect both resolution and light gathering power.

Accepted Answer

The resolution would now be tw

Question 15

Due to our ozone layer, ultraviolet astronomy must be done from space.

Accepted Answer

A) True 
 B)False

Question 16

Knowing the peak emission wavelength of a blackbody allows you to determine its ________.

Accepted Answer

The answer of Knowing the peak emission wavelength of a...

Question 17

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

Accepted Answer

The Doppler shift gives the st

Question 18

The two forms of electromagnetic radiation that penetrate the atmosphere best are

Accepted Answer

A)  X-rays and gamma rays. 
B)  ultraviolet and visible light. 
C)  visible and infrared light. 
D)  visible and radio waves. 
E)  infrared and microwaves. 
A)  X-rays and gamma rays. 
B)  ultraviolet and visible light. 
C)  visible and infrared light. 
D)  visible and radio waves. 
E)  infrared and microwaves.

Question 19

Describe the relationship between frequency and wavelength.

Accepted Answer

The higher the frequ

Question 20

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

Accepted Answer

The atmosphere is op

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

How do radio interferometers greatly enhance resolution in radio wavelengths?

In an atom, electrons can have only specific, allowed orbital energies.

The shorter a wave's wavelength, the greater its energy.

Compared to optical telescopes, radio telescopes are built large because

A blue star has a higher surface temperature than a red star.

What is the light-gathering power of an 8-inch telescope compared to a 4-inch telescope?

Why is the angular resolution of radio telescopes much worse than that of smaller optical telescopes?

An X-ray photon has more energy than a visible photon.

Because the changes in energy levels happen in discrete steps, we refer to these as ________ leaps.

What is white light? Why do we perceive different colors with a prism?

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

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

Compare how doubling the diameter of a mirror will affect both resolution and light gathering power.

Due to our ozone layer, ultraviolet astronomy must be done from space.

Knowing the peak emission wavelength of a blackbody allows you to determine its ________.

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

The two forms of electromagnetic radiation that penetrate the atmosphere best are

Describe the relationship between frequency and wavelength.

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

The Night Sky

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

The Sun

Measuring the Stars

Star Formation and Evolution

Stellar Explosions

Black Holes

The Milky Way Galaxy

Galaxies

Cosmology and the Universe

Filters

Exam 2: Light and Telescopes

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

How do radio interferometers greatly enhance resolution in radio wavelengths?

In an atom, electrons can have only specific, allowed orbital energies.

The shorter a wave's wavelength, the greater its energy.

Compared to optical telescopes, radio telescopes are built large because

A blue star has a higher surface temperature than a red star.

What is the light-gathering power of an 8-inch telescope compared to a 4-inch telescope?

Why is the angular resolution of radio telescopes much worse than that of smaller optical telescopes?

An X-ray photon has more energy than a visible photon.

Because the changes in energy levels happen in discrete steps, we refer to these as ________ leaps.

What is white light? Why do we perceive different colors with a prism?

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

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

Compare how doubling the diameter of a mirror will affect both resolution and light gathering power.

Due to our ozone layer, ultraviolet astronomy must be done from space.

Knowing the peak emission wavelength of a blackbody allows you to determine its ________.

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

The two forms of electromagnetic radiation that penetrate the atmosphere best are

Describe the relationship between frequency and wavelength.

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

The Night Sky

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

The Sun

Measuring the Stars

Star Formation and Evolution

Stellar Explosions

Black Holes

The Milky Way Galaxy

Galaxies

Cosmology and the Universe

Filters