Red
The layer of soil that contains humus
Topsoil
The layer of soil which most plants grow
Topsoil
The layer of soil that is made of solid, unweathered rock is called
Bedrock
Small bits of weathered rock is called
Sediment
When sediment is deposited at the end of a river, it makes the water at the delta...
shallower
The movement of sediment 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
True or False
Two examples of landforms are mountains and dunes
True
What are three things that can cause rocks to weather (not including frost weathering)
Water, Wind, Plants
What are the three sizes of weathered rock in soil?
Sand, Silt, Clay
Two kinds of sudden erosion caused by gravity
Landslides and avalanches
This occurs when water or wind gradually wears away rock by friction
Abrasion
Water in and around rocks that freezes and breaks up the rocks
Frost weathering
A huge sheet of ice that stays frozen all year
Glacier
The process of breaking down rocks into smaller pieces is called
weathering
The layer of soil that contains weathered rock but does not contain humus is called...
subsoil
Volcanoes and earthquakes can push land _________?
upward
A hill formed by sediment coming out of a glacier
Morraine
The name for decayed plants and animals in soil
Humus
True or false
Erosion always happens slowly
False
True or False
Glaciers can pick up sediment and rocks
True
What can be formed as a result of a melted glacier in a U-shaped valley?
Ponds and Lakes
Rapid downhill movement of a large amount of soil and rocks
Landslide