Layers of The Cake Called Earth
The layer of top soil that contains humus is called_____.
A) Topsoil
B) subsoil
C) bedrock
A) topsoil
Small bits of weathered rock and other material are called _____.
A)humus
B) abrasion
C) sediment
C) sediment
The moving of bits of weathered material from one place to another is called______.
A) sediment
B) gravity
C) erosion
C) erosion
Two types of landforms are _____.
A) mountains and dunes
B) gorges and rivers
C) dunes and lakes
A) mountains and dunes
The process of breaking down rocks into smaller pieces is called ______.
A) landslide
B) weathering
C) frost weathering
B) weathering
The layer in which most plants grow is called_____.
A) topsoil
B) bedrock
C) subsoil
A) topsoil
sediment that has deposited at the mouth of a river makes the mouth of the river _____.
A) narrower
B) deeper
C) shallower
C) shallower
Two kinds of sudden erosion cauased by gravity are ______.
A) landslides and avalanches
B) wind and water
C) wind and avalanches
A) landslides and avalanches
A huge sheet of ice that stays frozen all year is called a ____.
A) avalanche
B) glacier
C) mountain top
B) glacier
Three things that can cause rocks to weather are _____.
A) wind, water, and plants
B) wind, tornados, and plants
C) water, rain, and plants
A) wind, water, and plants
The layer that is made of soil, unweathered rock under layers of soil is called______.
A) topsoil
B) bedrock
C) subsoil
B) bedrock
the dropping of sediment in a new place is called______.
A) landforms
B) abrasion
C) deposition
C) deposition
The rapid downhill movement of a large amount of soil and rocks is called______.
A) an avalanche
B) a landslide
C) weathering
B) a landslide
A moraine is a hill formed by ______.
A) a glacier
B) deposition
C) weathering
A) a glacier
This occurs when water or wind gradually wear away rocks by friction.
A) abrasion
B) frost weathering
C) landslide
A) abrasion
A) water, humus, and fossils
B) weathered rock, air, and mesas
C) weathered rock, water, air, and humus
C) weathered rock, water, air, and humus
An area of sediment that builds up at the mouth of a river is called _______.
A) an avalanche
B) a butte
C) a delta
C) A delta
A sudden downhill movement of a large amount of snow and ice is called _____.
A) A landslide
B) erosion
C) an avalanche
C) an avalanche
Glaciers can pick up sediments and rocks.
True.
The process of water in and around rocks and soil freezing and expanding, breaking up the rocks.
A) abrasion
B) frost weathering
C) landslide
B) frost weathering
The soil layer that is mostly coarse, weathered rocks and does not contain humus is the _____.
A) topsoil
B) bedrock
C) subsoil
C) subsoil
True or False:
Decayed plant and animal material in soil is called sediment.
False. Humus.
A) upward
B) down
C) together
A) upward
True or False:
U-Shaped valleys where ponds and lakes form can be caused by glaciers.
True.
The three sizes of weathered rock found in soil are ______.
A) pebbles, gravel, and clay
B) sand, silt, and clay
C) sand, pebbles, and clay
B) sand, silt, and clay