Question 1

All telescopes must be operated on site by an astronomer or a technician.

Accepted Answer

A) True 
 B)False

Question 2

The ____ of a radio telescope collects and focuses radiation.

Accepted Answer

A)  lens 
B)  dish 
C)  mirror 
D)  antenna 
E)  computer 
A)  lens 
B)  dish 
C)  mirror 
D)  antenna 
E)  computer

Question 3

Why aren't optical or radio telescopes used in particle astronomy, which studies cosmic waves and gravity waves?

Accepted Answer

A)  Cosmic and gravity waves are too dangerous to detect. 
B)  Particle astronomy can only be studied in deep space. 
C)  Cosmic and gravity waves are too large of particles for ground-based telescopes. 
D)  Optical and radio telescopes can only detect electromagnetic radiation. 
E)  Optical and radio telescopes are not technologically advanced enough to capture these particles. 
A)  Cosmic and gravity waves are too dangerous to detect. 
B)  Particle astronomy can only be studied in deep space. 
C)  Cosmic and gravity waves are too large of particles for ground-based telescopes. 
D)  Optical and radio telescopes can only detect electromagnetic radiation. 
E)  Optical and radio telescopes are not technologically advanced enough to capture these particles.

Question 4

Name all the forms of radiation within the electromagnetic spectrum in the order from shortest to longest wavelength.

Accepted Answer

Gamma rays, X-rays, ultraviole

Question 5

Astronomers no longer build large observatories in populated areas in order to avoid _______________.

Accepted Answer

light poll

Question 6

What is the function of the receiver antenna of a radio telescope?

Accepted Answer

A)  To absorb the radio energy collected by the dish 
B)  To collect and focus the radiation 
C)  To follow a signal 
D)  To move the telescope 
E)  To control the shape of the dish 
A)  To absorb the radio energy collected by the dish 
B)  To collect and focus the radiation 
C)  To follow a signal 
D)  To move the telescope 
E)  To control the shape of the dish

Question 7

What are the three factors which can limit the resolving power of a telescope?

Accepted Answer

diffraction, optical

Question 8

Red light of the visible light spectrum has longer wavelengths than blue.

Accepted Answer

A) True 
 B)False

Question 9

Visible light with wavelengths at the long-wavelength end ( l = 700 nm) appears as which color?

Accepted Answer

A)  red 
B)  orange 
C)  yellow 
D)  green 
E)  blue 
A)  red 
B)  orange 
C)  yellow 
D)  green 
E)  blue

Question 10

Which form of electromagnetic radiation is able to easily reach Earth's surface through an atmospheric window?

Accepted Answer

A)  microwave 
B)  radio 
C)  X-rays 
D)  gamma 
E)  ultraviolet 
A)  microwave 
B)  radio 
C)  X-rays 
D)  gamma 
E)  ultraviolet

Question 11

Cosmic rays are made of photons.

Accepted Answer

A) True 
 B)False

Question 12

What modern-day instrument do astronomers use to record images from telescopes?

Accepted Answer

A)  photometer 
B)  grating device 
C)  spectrograph 
D)  photographic plate 
E)  charge coupled device 
A)  photometer 
B)  grating device 
C)  spectrograph 
D)  photographic plate 
E)  charge coupled device

Question 13

What does chromatic aberration separate within refracting telescopes?

Accepted Answer

A)  color 
B)  lenses 
C)  images 
D)  photons 
E)  focal points 
A)  color 
B)  lenses 
C)  images 
D)  photons 
E)  focal points

Question 14

Which telescope will be launched into solar orbit and eventually replace observations made by the Hubble Space Telescope?

Accepted Answer

A)  Hinode 
B)  Kepler 
C)  Chandra 
D)  JWST 
E)  Fermi 
A)  Hinode 
B)  Kepler 
C)  Chandra 
D)  JWST 
E)  Fermi

Question 15

What telescope instrument is used to counter the eastward rotation of Earth?

Accepted Answer

A)  Newtonian focus 
B)  sidereal drive 
C)  active optics 
D)  Cassegrain focus 
E)  floppy mirrors 
A)  Newtonian focus 
B)  sidereal drive 
C)  active optics 
D)  Cassegrain focus 
E)  floppy mirrors

Question 16

Where would you most likely find a large radio telescope?

Accepted Answer

A)  in a busy, populated area 
B)  at the peak of a mountain 
C)  on top of a tall building 
D)  in a mountain valley 
E)  near multiple radio towers 
A)  in a busy, populated area 
B)  at the peak of a mountain 
C)  on top of a tall building 
D)  in a mountain valley 
E)  near multiple radio towers

Question 17

Why have so many optical telescopes been built atop Mauna Kea, Hawai'i?

Accepted Answer

To avoid light pollution and l

Question 18

Explain the difference between cosmic rays and electromagnetic radiation, and how cosmic particles are captured.

Accepted Answer

Unlike electromagnetic radiation, which

Question 19

Why are reflecting telescopes cheaper to build than refracting telescopes?

Accepted Answer

Mirrors are much less expensive than len

Question 20

The larger the diameter of a telescope, the more light it will collect.

Accepted Answer

A) True 
 B)False

Exam 6: Light and Telescopes

All telescopes must be operated on site by an astronomer or a technician.

The ____ of a radio telescope collects and focuses radiation.

Why aren't optical or radio telescopes used in particle astronomy, which studies cosmic waves and gravity waves?

Name all the forms of radiation within the electromagnetic spectrum in the order from shortest to longest wavelength.

Astronomers no longer build large observatories in populated areas in order to avoid _______________.

What is the function of the receiver antenna of a radio telescope?

What are the three factors which can limit the resolving power of a telescope?

Red light of the visible light spectrum has longer wavelengths than blue.

Visible light with wavelengths at the long-wavelength end ( l = 700 nm) appears as which color?

Which form of electromagnetic radiation is able to easily reach Earth's surface through an atmospheric window?

Cosmic rays are made of photons.

What modern-day instrument do astronomers use to record images from telescopes?

What does chromatic aberration separate within refracting telescopes?

Which telescope will be launched into solar orbit and eventually replace observations made by the Hubble Space Telescope?

What telescope instrument is used to counter the eastward rotation of Earth?

Where would you most likely find a large radio telescope?

Why have so many optical telescopes been built atop Mauna Kea, Hawai'i?

Explain the difference between cosmic rays and electromagnetic radiation, and how cosmic particles are captured.

Why are reflecting telescopes cheaper to build than refracting telescopes?

The larger the diameter of a telescope, the more light it will collect.

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Astrobiology

Earth- the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus, Neptune, Pluto, and the Kuiper Belt

Meteorites, Asteroids, and Comets

Astrobiology

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