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Unit 4, Astronomy Review
Test Description: Earth Science Unit 4 review, second semester
Instructions: Answer all questions to get your test result.
1) Which explanation of the solar system best fits the observations of the planets and how they began orbiting the sun?
A
The planets formed at the center of a collapsing spinning cloud of gas and dust.
B
A comet hit the sun and sent off fragments that became the planets.
C
The gravity of a large, massive star passing the sun ripped off blobs of material from it that formed the planets.
D
The sun and planets formed from a collapsing spinning cloud of gas and dust.
2) Which of the following are found in orbit between Mars and Jupiter?
A
meteors
B
comets
C
meteorites
D
asteroids
3) Which planet is the most massive?
A
Neptune
B
Venus
C
Mercury
D
Jupiter
4) Which of the following is true for both gas planets and terrestrial planets?
A
They have rings.
B
They are a round shape.
C
They have a core of ice.
D
Their orbits are inside the asteroid belt.
5) Which type of star may turn into a neutron star or a black hole at the end of its life cycle?
A
massive star
B
red giant
C
low-mass star
D
medium-mass star
6) Which path is the correct path of light through a reflecting telescope?
A
eyepiece→primary mirror→secondary mirror→eye
B
secondary mirror→primary mirror→eye→eyepiece
C
primary mirror→eyepiece→secondary mirror→eye
D
primary mirror→secondary mirror→eyepiece→eye
7) Which of the following would you expect to see in the death of a star that is less than 0.5 solar mass?
A
planetary nebula
B
supernova
C
white dwarf
D
red giant
8) When a sunlike star’s hydrogen runs out, at first it expands into which of the following?
A
a white dwarf
B
a supergiant
C
a star similar to our sun
D
a red giant
9) Which classification describes the Milky Way?
A
regular spiral
B
barred spiral
C
elliptical
D
irregular
10) Which of the following describes scientists' best idea about the formation and expansion of the universe?
A
red shift hypothesis
B
elliptical
C
the big bang theory
D
expanding universe hypothesis
11) How do scientists know that the universe is expanding?
A
The galaxies are moving toward each other, and the temperatures are increasing.
B
The galaxies are moving toward each other, and the temperatures are decreasing.
C
The galaxies are moving away from each other, and the temperatures are decreasing.
D
The galaxies are moving away from each other, and the temperatures are increasing.
12) During which season and at what latitude does the sun not set?
A
winter and greater than 66°N
B
summer and greater than 66° N
C
spring and 0° N
D
fall and 23° N
*select an answer for all questions
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