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