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The layer of soil that contains humus is called...
topsoil
The layer in which most plants grow is called...
topsoil
The layer that is made of solid, unweathered rock under layers of soil is called ...
bedrock
Smalls bits of weathered rock and other material are called ...
sediment
Mr. M's favorite spelling word is ...
banana
Sediment that is deposited at the mouth of a river makes the mouth of the river ...
shallower
The moving of bits of weathered material from one place to another is called...
erosion
The dropping of sediment in a new place is called ...
deposition
An area of sediment that builds up at the mouth of a river is called...
delta
Soil is made of A) water, humus and fossil
B) weathered rock, air, and mesas
C) weathered rock, water, air, and humus
C
Two types of landforms are:
A) mountains and dunes
B) gorges and rivers
C) dunes and lakes
A
Three things that can cause rocks to weather are...
A) wind, tornadoes, and plants
B) wind, water, and plants
C) water, rain, and plants
B
The three sizes of weathered rock found in soil are...
A) pebbles, gravel, and clay
B) sand, pebbles, and clay
C) sand, silt, and clay
C
Two kinds of sudden erosion caused by gravity are...
A) landslides and avalanches
B) wind and water
C) wind and avalanches
A
It occurs when water or wind gradually wears away rock by friction
Abrasion
The process of water in and around rocks and soil freezing and expanding, breaking up the rocks is called...
frost weathering
