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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
stratosphere
D
hydrosphere
2) Which of these best describes the atmosphere's density?
A
the density stays the same no matter where you are in the atmosphere
B
the density increases the higher you go up
C
the density decreases as you go up
D
the density changes depending on cloud cover and temperature
3) The atmosphere is mostly made of
A
methane
B
oxygen
C
carbon dioxide
D
nitrogen
4) Which layer of the atmosphere contains weather?`
A
stratosphere
B
thermosphere
C
mesosphere
D
troposphere
5) Where can water be found on Earth?
A
all of the above
B
in the air
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
sink
B
watershed
C
reservoir
D
rain shadow
8) Most organisms need ___ water to survive
A
salt
B
sparkling
C
ground
D
fresh
9) The largest reservoir on Earth is the
A
Ogallala aquifer
B
ocean
C
ice caps
D
Waverly lake
10) How much of the freshwater on Earth is easily accessible?
A
more than 34%
B
3%
C
25%
D
less than 1%
11) The frozen portion of water on Earth's surface is called the
A
cryosphere
B
iceosphere
C
glaciosphere
D
frozosphere
12) How much freshwater is in the cryosphere?
A
less than 1%
B
99%
C
0%, it's all salt water
D
79%
13) Small pieces of rock are pressed together and cemented to form
A
organic rocks
B
metamorphic rocks
C
sedimentary rocks
D
igneous rocks
14) The thin, outer layer of Earth is the
A
mantle
B
mesosphere
C
crust
D
core
15) The middle layer of Earth that flows is called the
A
crust
B
troposphere
C
core
D
mantle
16) A substance is solid, created in a lab, inorganic, has a crystal structure, and a definite chemical composition. Is it a mineral?
A
yes
B
no
17) The way a mineral reflects light is its
A
color
B
streak
C
luster
D
hardness
18) A mineral's resistance to scratching is
A
streak
B
hardness
C
color
D
luster
19) Weather is the pattern of the atmosphere over a long period.
A
true
B
false
20) How much of the atmosphere is nitrogen?
A
21%
B
1%
C
33%
D
78%
*select an answer for all questions
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