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Science: Chapter 7
Test Description: Chapter 7 review: Lessons 1-4
Instructions: Answer all questions to get your test result.
1) Which solar system object is the largest?
A
Saturn
B
Mercury
C
the Sun
D
Jupiter
2) Which planet is the smallest?
A
Mars
B
Earth
C
Mercury
D
Venus
3) Which best describes the asteroid belt?
A
another name of the Oort cloud
B
millions of small rocky objects
C
the region where comets originate
D
large chunks of gas, dust, and ice
4) Which describes a planet's speed as it orbits the Sun?
A
it constantly increases
B
It increased then decreases
C
it constantly decreases
D
it does not change
5) Which describes the greenhouse effect?
A
effect of gravity on temperature
B
energy trapped by atmosphere
C
energy emitted by the Sun
D
reflection of light from a planet
6) How are the terrestrial planets similar?
A
similar diameters
B
similar periods of rotation
C
similar densities
D
similar rocky surfaces
7) Which inner plannet is te hottest
A
Mars
B
Earth
C
Venus
D
Mercury
8) How does Earth differ from other inner planets?
A
its period of revolution is much greater
B
its surface temperature is higher
C
its atmosphere contains large amounts of methane
D
its surface is covered by large amounts of liquid water
9) Which two gases make up most of the outer planets?
A
methane and hydrogen
B
ammonia and helium
C
hydrogen and helium
D
helium and methane
10) Which is true of the dwarf planets?
A
orbit near the moon
B
never have moons
C
spherically shaped
D
more massive than nearby objects
11) Which is a bright streak of light in Earth's atmosphere?
A
meteroite
B
meteor
C
comet
D
meteroid
12) Which best describes an asteroid?
A
icy
B
rocky
C
wet
D
round
13) An astronomical unit is defined by
A
100 million kilometers
B
the distance Mercury is from the Sun
C
150 million kilometers
D
the distance Earth is from the Sun
14) a small, rocky particle that moves through space
A
meteorite
B
impact crater
C
meteor
D
meteroid
15) a meteroid that strikes a planet or moon
A
impact crater
B
meteroid
C
meteorite
D
meteor
16) a round depression formed on the surface of a planet, moon, or other space object
A
meteorid
B
meteor
C
impact crater
D
meteorite
17) The four largest moons of Jupiter- Io, Europa, Ganymede, and Callisto are known as
A
Gas Giants
B
Astronomical Units
C
Galilean moons
D
Dwarf moons
18) This occurs when a planet's atmosphere traps solar energy and causes the surface temperature to increase
A
greenhouse gases
B
terrestrial planet
C
greenhouse effect
D
water vapor
19) planets closest to the Sun, made of rock and metal, and have solid outer layers
A
gas giants
B
dwarf planets
C
galilean moons
D
terrestrial planets
20) the time it takes an object to travel once around the Sun
A
rotation
B
revolution
C
period of rotation
D
period of revolution
*select an answer for all questions
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