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