Soil
The layer of soil that contains humus is called ________.
topsoil
Sediment that is deposited at the mouth of a river makes the mouth of the river _______.
more shallow
An area of sediment that builds up at the mouth of a river is called ________.
a delta
What is a glacier?
A huge sheet of ice that stays frozen all year long and moves slowly downhill.
How does gravity affect erosion?
It pulls sediment carried by water, wind, or ice toward the earth.
The layer in which most plants grow is called _______.
topsoil
The moving bits of weathered material from one place to another is called _______.
erosion
How does a sea cave form along the beach?
Ocean waves erode the rocks and form a hole.
What causes a glacier to move downhill?
gravity
What is soil creep?
When gravity causes soil and rocks to slowly move downhill.
The layer that is made of solid, unweathered rock under layers of soil is called _________.
bedrock
The dropping of sediment in a new place is called _________.
deposition
A __________, mesa, and butte were probably formed as water cut through the rock.
pinnacle
What materials does a glacier contain?
Ice, rocks, sediment, boulders
A landslide is ___________________________.
the rapid downward movement of large amounts of soil and rocks.
Small bits of weathered rock and other material are called _________.
sediment
What can erode the soil?
water, wind, and ice
Name 3 landforms that were made by water erosion.
Mesa, butte, pinnacle, sea cave, sea arch
In what ways does a glacier change the earth's surface?
scratches the ground, polishes rock
What is an avalanche?
When a large amount of snow and ice suddenly moves down a mountain.
Soil is made of _________, _______, _______, and ________.
weathered rock, water, air, and humus
The process of breaking rocks into smaller pieces is called ________.
weathering
__________ is the moving of sediment from one place to another and can cause different landforms on our Earth.
The large piles of sediment and rocks that are left behind by glaciers are called ________.
moraines
What causes an avalanche?