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Grade 8 Review #1
Test Description: Grade 8
Instructions: Answer all questions to get your test result.
1) During the 1500's geographers who made the first accurate maps noticed that
A
information given to them by the explorers was false.
B
the continents seemd to fit together like a puzzle.
C
there was more land than water.
D
there were seven continents.
2) The theory that says that the earth's surface is made up of about 20 moving plates is called
A
technical evidence.
B
plate tectonics
C
hypothesis
D
plate pressures
3) Which of these statements of the earth's crust is TRUE?
A
It is flat on either side of the poles.
B
It is not quite solid.
C
It is tyoo hot on which to live.
D
It is a layer of hard rock. with water in some places.
4) Which of these is caused by plate movements?
A
fossils and rock layers.
B
mountains, earthquakes and volcanoes
C
waves, tides and floods
D
thunder, wind and rain
5) Mountains, volcanoes, and earthquakes may occur when one plate
A
pushes apart
B
breaks open
C
erodes.
D
pushes against another plate.
6) Water causes physical weathering when it
A
combines with weak acids to change what the rock is made of.
B
breaks a rock into pieces by expanding when it freezes.
C
combines with air, wind, ice or living things.
D
heats to a very high temperature within the Earth.
7) Weathered rock and soil are moved by the process of
A
weathering
B
erosion
C
deposition
D
formation
8) Fast-moving water in rivers or streams can
A
erode soil and small rocks from the banks
B
freeze to form glaciers
C
prevent weathering of rocks on the banks
D
wash river and stream bottoms clean
9) As it slows down, water drops eroded materials in a process called
A
deposition
B
weathering
C
formation
D
erosion
10) Water causes chemical weathering when it
A
flows in a river that cuts a canyon through a rock
B
flows quickly down mountains
C
mixes with carbon dioxide and dissolves limestone.
D
breaks large rocks into smaller rocks.
*select an answer for all questions
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