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Astronomy Review Chp 4
Test Description: Pearson Chapter 4
Instructions: Answer all questions to get your test result.
1) The electromagnetic spectrum consists of
A
all of the different types of electromagnetic waves.
B
the distance between the crest of one wave and the crest of the next wave.
C
a band of colors formed when white light passes through a prism.
D
all of the colors of light you can see with your eyes.
2) A range of colors formed when white light passes through a prism is called a
A
ray.
B
spectrum.
C
photograph.
D
lens.
3) Both reflecting and refracting telescopes are designed to
A
break visible light into colors of the spectrum.
B
gather and focus visible light.
C
work better with short-wavelength radiation.
D
separate visible light from ultraviolet and radio waves.
4) Reflecting telescopes differ from refracting telescopes in having
A
two large objective lenses.
B
one large objective lens.
C
no eyepiece lens.
D
a mirror instead of an objective lens.
5) A light-year is
A
365 days.
B
the distance light travels in a year.
C
the distance from Earth to Proxima Centauri.
D
the amount of light the sun produces in a year.
6) Parallax is used to determine a star’s
A
brightness.
B
temperature.
C
distance from Earth.
D
composition.
7) Characteristics used to classify stars include
A
size, brightness, and temperature.
B
distance, size, and color.
C
color, brightness, and distance.
D
size, distance, and brightness.
8) What color are the coolest stars?
A
blue-white
B
yellow
C
orange
D
red
9) A star is born when
A
helium and oxygen combine.
B
a nebula expands.
C
a protostar begins to cool.
D
nuclear fusion starts.
10) The lifetime of a star depends on its
A
temperature.
B
mass.
C
apparent brightness.
D
absolute brightness.
11) A supernova is the explosion of a dying
A
medium-mass star.
B
low-mass star.
C
protostar.
D
high-mass star.
12) The absolute brightness of a star depends on its
A
distance and color.
B
distance and temperature.
C
size and temperature.
D
color and temperature.
13) The Hertzsprung-Russell diagram shows that main-sequence stars
A
are mostly hot and dim.
B
are mostly cool and bright.
C
increase in brightness as they increase in temperature.
D
decrease in brightness as they increase in temperature.
14) Why are many large optical telescopes located on mountains?
A
to be closer to the stars
B
to be above part of the atmosphere
C
to be closer to city lights
D
because it is easier to build telescopes on mountains
*select an answer for all questions
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