Completion
Complete each sentence or statement.
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1.
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The _______________ is the
point on the celestial sphere directly above an observer, regardless of where the observer is located
on Earth.
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2.
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A(n) _______________ is the
largest known structure in the universe.
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3.
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The process of removing an
electron from a stable nucleus is known as _______________.
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4.
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The _______________ of a star
can be determined from its color.
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5.
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Which planets are never visible
near the eastern horizon at sunset?
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6.
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The number 52,600,000,000 would
be written in scientific notation as _______________.
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7.
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Light takes about 8 minutes to
travel from the sun to Earth and about 40 minutes to travel from the sun to Jupiter. Jupiter is about
_______________ AU from the sun
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True/False
Indicate whether the sentence or statement is true or
false.
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8.
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A light-year is the distance
light travels in one year.
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9.
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The sun is a star in the Milky
Way Galaxy.
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10.
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The celestial equator always
crosses the horizon at the east point and west point.
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11.
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A kilometer contains 1 million
meters.
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12.
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The metric system is a decimal
system.
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13.
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Hydrogen alpha is the longest
wavelength Balmer line.
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14.
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An absorption spectrum is also
called a bright line spectrum.
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15.
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Light can behave as a particle
or as a wave.
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16.
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Blue stars are hotter than red
stars.
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17.
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Light with a wavelength of 300
nm has a lower frequency than light with a wavelength of 500 nm.
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18.
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The nearest star is 1 ly from
the solar system.
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19.
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The Doppler effect is sensitive
only to motion along the line of sight.
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Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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20.
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A galaxy
contains a. | large amounts of gas and dust but very few
stars. | b. | primarily planets. | c. | a single star and planets. | d. | large amounts of gas, dust, and
stars. | e. | thousands of superclusters. | | |
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21.
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4.4 106
divided by 8.8 1010 is equal to a. | 3.9 1016. | b. | 5.0 10-4. | c. | 5.0 104. | d. | 3.9 1017. | e. | 5.0 10-5. | | |
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22.
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What is the energy of the
photon whose wavelength is 400 nm? a. | 1.2 1012 m | b. | 7.5 104 Hertz | c. | 5.0 10-19 Joules | d. | 1.3 10-5 m | e. | 2.7 10-30 Joules | | |
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23.
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There are _______________
nanometers in one meter. a. | 1 103 | b. | 1 10-9 | c. | 400 | d. | 1 10-3 | e. | 1 109 | | |
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24.
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The celestial equator
is a. | a line around the sky directly above Earth's equator. | b. | the dividing line between the north and south celestial
hemispheres. | c. | the path that the sun appears to follow on the celestial sphere as
Earth orbits the sun. | d. | a and b. | e. | a and c. | | |
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25.
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_______________ has (have)
wavelengths that are shorter than visible light. a. | Gamma-rays | b. | Ultraviolet light | c. | Infrared
radiation | d. | Radio | e. | a and b | | |
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26.
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An observer in the Northern
Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that
the stars near the north celestial pole appear to move a. | clockwise. | b. | nearly vertically
upward. | c. | from left to right. | d. | counter clockwise. | e. | from right to
left. | | |
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27.
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2.9 107 is
the same as a. | 29 thousand. | b. | 290 thousand. | c. | 29 million. | d. | 2.9 million. | e. | 2.9 thousand. | | |
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28.
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An observer on Earth's equator
would find a. | Polaris 40° above the northern
horizon. | b. | the celestial equator passing directly
overhead. | c. | Polaris directly overhead. | d. | that the ecliptic coincides with the horizon. | e. | that the celestial equator coincides with the horizon. | | |
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29.
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If the light takes 8 minutes to
reach Earth from the sun and the nearest star is 4.7 ly from the sun, what is the distance from the
sun to the nearest star in astronomical units? a. | 310,000 AU | b. | 1.7 AU | c. | 1.5 1011
AU | d. | 37.6 AU | e. | 214 AU | | |
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30.
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The Hγ line has a wavelength of 434.0 nm when observed in the laboratory. If
the Hγ line appears in a stars spectrum at 434.5
nm, what is the radial velocity of the star? a. | 346 km/sec away from the
observer. | b. | 1.3 108 m/sec toward the observer. | c. | 1.3 108 m/sec away from the observer. | d. | The radial velocity of the star can not be determined from this
information. | e. | 346 km/sec toward the observer. | | |
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31.
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Which of the following can be
determined by using the Doppler effect?
I. | The speed at which a star is moving away
from an observer. | II. | The transverse velocity of a star. | III. | The radial velocity of a star. | IV. | The speed at which a car is traveling
toward an observer. | | |
a. | I & III | b. | I, III, & IV | c. | I & IV | d. | II & IV | e. | II & III | | |
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32.
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What is the wavelength of the
shortest wavelength light visible to the human eye? a. | 400 nm | b. | 700 nm | c. | 7000 nm | d. | 4000 nm | e. | 3 108 m | | |
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33.
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A wave traveling at a speed of
90 meters per second with a frequency of 60 Hz would have a wavelength of a. | 1.5 meters. | b. | 540 nm. | c. | 90 meters. | d. | 60 meters. | e. | 5400 meters. | | |
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34.
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_______________ has (have)
wavelengths that are longer than visible light. a. | Gamma-rays | b. | Ultraviolet light | c. | Infrared
radiation | d. | X-rays | e. | a, b and d above | | |
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35.
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3.0 105
times 1.5 109 is equal to a. | 2.0 1045. | b. | 4.5 1045. | c. | 2.0 1014. | d. | 2.0 104. | e. | 4.5 1014. | | |
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36.
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Violet light has a wavelength
of approximately _______________. a. | 700 nm | b. | 7000 nm | c. | 4000 nm | d. | 400 nm | e. | 3 108 m | | |
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37.
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The star Vega has an apparent
visual magnitude of 0.03, and the star HR 4374 has an apparent visual magnitude of 4.87. It has been
determined that both stars are at the same distance from Earth. What does this information tell us
about the two stars? a. | Vega must produce more energy than HR
4374. | b. | Vega must be farther from Earth than HR
4374. | c. | Vega must be closer to Earth than HR 4374. | d. | Vega will appear fainter to us than HR 4374. | e. | Vega must produce less energy than HR 4374. | | |
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38.
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The sun is a. | 1 AU from Earth. | b. | a star. | c. | more than 100 times the diameter of Earth. | d. | all of the above. | e. | none of the
above. | | |
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39.
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How many centimeters are there
in one kilometer a. | 100 | b. | 100,000 | c. | 1000 | d. | 1 106 | e. | 10,000 | | |
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40.
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Absolute zero
is a. | zero degrees Celsius. | b. | the temperature at which atoms have no
remaining energy from which we can extract heat. | c. | the temperature at which water freezes. | d. | both a and c | e. | none of the
above | | |
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41.
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If the north celestial pole
appears on your horizon, what is your latitude? a. | 90° S | b. | The latitude of the observer cannot be determined from the information
given. | c. | 0° | d. | 45° N | e. | 90° N | | |
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42.
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The Milky Way
Galaxy a. | contains about 100 billion stars. | b. | is about 100 light-years in diameter. | c. | is the largest known object in the universe. | d. | a., b., and c. are correct | e. | Only a. and c. are
correct. | | |
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43.
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64,200,000,000 is equal
to a. | 6.42 1010. | b. | 1.0 1064.2. | c. | 6.42 10-10. | d. | 6.42 10-7. | e. | 6.42 107. | | |
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44.
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What is the wavelength of the
longest wavelength light visible to the human eye? a. | 3 108 m | b. | 700 nm | c. | 4000 nm | d. | 7000 nm | e. | 400 nm | | |
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45.
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You live at a latitude of
73° N. What is the angle between the northern horizon and the north celestial
pole? a. | 27° | b. | 5° | c. | 17° | d. | 73° | e. | 231/2° | | |
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46.
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The _______________ is the
point on the celestial sphere directly above any observer. a. | south celestial pole | b. | celestial
equator | c. | north celestial pole | d. | zenith | e. | asterism | | |
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47.
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The radiation emitted from a
star has a maximum intensity at a wavelength of 500 nm. What is the temperature of this
star? a. | 1.5 109 K | b. | 10,000 K | c. | 6,000 K | d. | 5,000 K | e. | 500 K | | |
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48.
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Seen from the northern
latitudes, the star Polaris a. | always sets directly in the
west. | b. | is always above the northern horizon. | c. | is never visible during the winter. | d. | is never above the horizon during the day. | e. | is the brightest star in the sky. | | |
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49.
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The radiation emitted from a
star has a maximum intensity at a wavelength of 300 nm. What is the temperature of this
star? a. | 900,000,000 K | b. | 10,000 K | c. | 300 K | d. | 100 K | e. | 90,000 K | | |
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50.
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A beam of light from a laser
has a wavelength of 600 nm, what is the frequency of this light? a. | 2 10-15 Hz | b. | 6000 Hz | c. | 5 1014 Hz | d. | 1.8 1012 Hz | e. | 3 108 m/s | | |
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