Question 1

Using Wien's law, you can measure the ____ of a distant object without having to travel to it.

Accepted Answer

A)  binding energy 
B)  temperature 
C)  radial motion 
D)  energy output 
E)  atomic composition 
A)  binding energy 
B)  temperature 
C)  radial motion 
D)  energy output 
E)  atomic composition

Question 2

A shift in the position of an emission line of an element toward the red or blue is produced by ____.

Accepted Answer

A)  atoms that become ionized 
B)  electrons that transfer from a high energy level to a low energy level 
C)  electrons that transfer from a low energy level to a high energy level 
D)  the intensity of agitation of atoms in a hot gas 
E)  the motion of an object toward or away from the observer 
A)  atoms that become ionized 
B)  electrons that transfer from a high energy level to a low energy level 
C)  electrons that transfer from a low energy level to a high energy level 
D)  the intensity of agitation of atoms in a hot gas 
E)  the motion of an object toward or away from the observer

Question 3

If absorption lines of sodium are not present in a star's spectrum, the star must not contain any sodium.

Accepted Answer

A) True 
 B)False

Question 4

The agitation of atoms in a hot body creates a continuous spectrum of radiation.

Accepted Answer

A) True 
 B)False

Question 5

A certain type of atom can only absorb certain wavelengths.

Accepted Answer

A) True 
 B)False

Question 6

The binding energy is the amount of energy ____.

Accepted Answer

A)  needed to pull a proton completely away from the nucleus 
B)  needed to pull an electron completely away from the nucleus 
C)  needed to push a neutron into the nucleus 
D)  needed to completely separate all particles in the atom 
E)  necessary to move a proton to a permitted orbit 
A)  needed to pull a proton completely away from the nucleus 
B)  needed to pull an electron completely away from the nucleus 
C)  needed to push a neutron into the nucleus 
D)  needed to completely separate all particles in the atom 
E)  necessary to move a proton to a permitted orbit

Question 7

A continuous spectrum is produced by ____.

Accepted Answer

A)  atoms that become ionized 
B)  electrons that transfer from a high energy level to a low energy level 
C)  electrons that transfer from a low energy level to a high energy level 
D)  the intensity of agitation of atoms in a hot gas 
E)  the motion of an object toward or away from the observer 
A)  atoms that become ionized 
B)  electrons that transfer from a high energy level to a low energy level 
C)  electrons that transfer from a low energy level to a high energy level 
D)  the intensity of agitation of atoms in a hot gas 
E)  the motion of an object toward or away from the observer

Question 8

The amount of energy needed to move an electron from a lower energy level to a higher energy level is the ____.

Accepted Answer

A)  energy of the higher level 
B)  energy of the lower level 
C)  difference in energy between the two levels 
D)  product of the energies of the two levels 
E)  binding energy 
A)  energy of the higher level 
B)  energy of the lower level 
C)  difference in energy between the two levels 
D)  product of the energies of the two levels 
E)  binding energy

Question 9

The Doppler effect is useful in measuring the ____.

Accepted Answer

A)  distance to an object 
B)  chemical composition of an object 
C)  temperature of an object 
D)  motion of an object across the line of sight of an observer 
E)  motion of an object toward or away from the observer 
A)  distance to an object 
B)  chemical composition of an object 
C)  temperature of an object 
D)  motion of an object across the line of sight of an observer 
E)  motion of an object toward or away from the observer

Question 10

In blackbody radiation, short-wavelength and long-wavelength photons are rare.

Accepted Answer

A) True 
 B)False

Question 11

Small differences in temperature between two stars produce small differences in the amount of energy they radiate.

Accepted Answer

A) True 
 B)False

Question 12

The Kelvin temperature scale is based on the freezing point of water.

Accepted Answer

A) True 
 B)False

Question 13

Emission lines are produced by ____.

Accepted Answer

A)  atoms that become ionized 
B)  electrons that transfer from a high energy level to a low energy level 
C)  electrons that transfer from a low energy level to a high energy level 
D)  the intensity of agitation of atoms in a hot gas 
E)  the motion of an object toward or away from the observer 
A)  atoms that become ionized 
B)  electrons that transfer from a high energy level to a low energy level 
C)  electrons that transfer from a low energy level to a high energy level 
D)  the intensity of agitation of atoms in a hot gas 
E)  the motion of an object toward or away from the observer

Using Wien's law, you can measure the ____ of a distant object without having to travel to it.

A shift in the position of an emission line of an element toward the red or blue is produced by ____.

If absorption lines of sodium are not present in a star's spectrum, the star must not contain any sodium.

The agitation of atoms in a hot body creates a continuous spectrum of radiation.

A certain type of atom can only absorb certain wavelengths.

The binding energy is the amount of energy ____.

A continuous spectrum is produced by ____.

The amount of energy needed to move an electron from a lower energy level to a higher energy level is the ____.

The Doppler effect is useful in measuring the ____.

In blackbody radiation, short-wavelength and long-wavelength photons are rare.

Small differences in temperature between two stars produce small differences in the amount of energy they radiate.

The Kelvin temperature scale is based on the freezing point of water.

Emission lines are produced by ____.

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

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

Origin of the Solar System and Extrasolar Planets

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

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Exam 7: Atoms and Spectra

Using Wien's law, you can measure the ____ of a distant object without having to travel to it.

A shift in the position of an emission line of an element toward the red or blue is produced by ____.

If absorption lines of sodium are not present in a star's spectrum, the star must not contain any sodium.

The agitation of atoms in a hot body creates a continuous spectrum of radiation.

A certain type of atom can only absorb certain wavelengths.

The binding energy is the amount of energy ____.

A continuous spectrum is produced by ____.

The amount of energy needed to move an electron from a lower energy level to a higher energy level is the ____.

The Doppler effect is useful in measuring the ____.

In blackbody radiation, short-wavelength and long-wavelength photons are rare.

Small differences in temperature between two stars produce small differences in the amount of energy they radiate.

The Kelvin temperature scale is based on the freezing point of water.

Emission lines are produced by ____.

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

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

Origin of the Solar System and Extrasolar Planets

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

Filters