Environmental Changes — Unit test Answers

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1
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Which describes bedrock?

A
consists of solid rock
B
lies directly above the soil layer
C
does not contain weathered rock
D
forms from decomposed material
2
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Which effect is one likely result of a forest fire?

A
extinction
B
adaptation
C
speciation
D
forced migration
3

Which example is a long-term environmental change?

A
La Niña
B
El Niño
C
climate change
D
small asteroid impact
4

Which rocks will likely weather the least?

A
rocks that are soft
B
rocks with a porous surface
C
rocks that are in a dry climate
D
rocks with minerals that dissolve easily
5

Which example is a short-term environmental change?

A
ice age
B
tsunami
C
global warming
D
large asteroid impact
6

A tsunami hits the coast of a heavily populated island. Which effect might occur?

A
extinction
B
loss of homes
C
genetic change
D
speciation
7

Which term describes erosion?

A
creates small particles
B
hardens rock fragments
C
transports solid materials
D
dissolves rock components
8

Which correctly lists the three types of rock particles that make up soil?

A
air, clay, and sand
B
clay, water, and silt
C
sand, clay, and silt
D
silt, water, and air

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