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Ch 3, 6th Grade
Test Description: Earth's systems
Instructions: Answer all questions to get your test result.
1) Which is NOT an Earth system?
A
atmosphere
B
biosphere
C
hydrosphere
D
stratosphere
2) Which of these best describes the atmosphere's density?
A
the density changes depending on cloud cover and temperature
B
the density stays the same no matter where you are in the atmosphere
C
the density decreases as you go up
D
the density increases the higher you go up
3) The atmosphere is mostly made of
A
oxygen
B
methane
C
carbon dioxide
D
nitrogen
4) Which layer of the atmosphere contains weather?`
A
stratosphere
B
thermosphere
C
troposphere
D
mesosphere
5) Where can water be found on Earth?
A
in the air
B
all of the above
C
on the surface
D
underground
6) The amount of water on Earth changes
A
false
B
true
7) A natural location where water is stored is called a
A
watershed
B
sink
C
reservoir
D
rain shadow
8) Most organisms need ___ water to survive
A
fresh
B
sparkling
C
salt
D
ground
9) The largest reservoir on Earth is the
A
ocean
B
ice caps
C
Waverly lake
D
Ogallala aquifer
10) How much of the freshwater on Earth is easily accessible?
A
more than 34%
B
25%
C
less than 1%
D
3%
11) The frozen portion of water on Earth's surface is called the
A
glaciosphere
B
frozosphere
C
iceosphere
D
cryosphere
12) How much freshwater is in the cryosphere?
A
99%
B
0%, it's all salt water
C
less than 1%
D
79%
13) Small pieces of rock are pressed together and cemented to form
A
sedimentary rocks
B
metamorphic rocks
C
igneous rocks
D
organic rocks
14) The thin, outer layer of Earth is the
A
crust
B
core
C
mesosphere
D
mantle
15) The middle layer of Earth that flows is called the
A
mantle
B
troposphere
C
crust
D
core
16) A substance is solid, created in a lab, inorganic, has a crystal structure, and a definite chemical composition. Is it a mineral?
A
no
B
yes
17) The way a mineral reflects light is its
A
hardness
B
luster
C
streak
D
color
18) A mineral's resistance to scratching is
A
hardness
B
luster
C
streak
D
color
19) Weather is the pattern of the atmosphere over a long period.
A
false
B
true
20) How much of the atmosphere is nitrogen?
A
21%
B
78%
C
1%
D
33%
*select an answer for all questions
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