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4th Grade Soil And Weathering
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Mountains, canyons, reefs, and islands are some of the physical features on the earth's surface called---
A
weathering
B
humus
C
landforms
D
soil
2) A process of breaking down rocks into smaller pieces is called ----
A
weathering
B
upward
C
erosion
D
landforms
3) Decayed plant and animal material in soil is called ---
A
humus
B
silt
C
clay
D
sand
4) The three sizes of weathered rock found in soil are ___________, silt, and clay.
A
water
B
landforms
C
none of the above
D
sand
5) _____________is made of weathered rock, water, air, and humus.
A
none of the above
B
an earthquake
C
soil
D
a volcano
6) The layer in which most plants grow is called---
A
subsoil
B
none of the above
C
topsoil
D
bedrock
7) The layer that is mostly coarse, weathered rocks without humus is called---
A
none of the above
B
subsoil
C
topsoil
D
bedrock
8) _______________happens when water in and around rocks and soil freezes and expands, breaking up the rocks.
A
none of the above
B
abrasion
C
frost weathering
D
humus
9) ________________happens as water or wind gradually wears away rock by friction.
A
humus
B
abrasion
C
frost action
D
frost weathering
10) The loose material on the surface of the earth is called---
A
abrasion
B
volcanoes
C
landforms
D
soil
*select an answer for all questions
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