erosion
what is erosion?
erosion is the process of wearing down and carrying rocks
name the 4 mass movements
creeps,slump,landslide and mudflow
what is soil
soil is the loose,weathered material on Earth's surface in which plants can grow
what is deposition?
deposition occurs where the agents of erosion deposit,or lay down, sediments.
answers will vary
name the 5 agents of erosion
wind,moving water,wave,mass movements,and glacial.
how do mudflows occur?
mudflows often occur after heavy rains in a normally dry area.
what is soil a mixture of?
rock particles,minerals,decayed organic materials,water, and air
what are glaciers?
glaciers are any large mass of ice that moves slowly over land.
what fuels the water cycle?
the sun's energy
how does moving water cause erosion?
erosion by water begins with a splash of rain. some rainfall sinks into the ground. some evaporates or is taken up by plants. the rest of the water runs off over the land surface.
how do landslides occur?
A landslide occurs when rock and soil slide quickly down a steep slope.
what does humus do?
helps create spaces in soil for air and water. humus also contains nutrients that plants need
what is bedrock?
Bedrock is the solid layer of rock beneath the soil
the water cycle is endless
true or false?
true
how does a rivers ability to erode change with the seasons?
as the seasons change, so does the river. in winter, the surface of the river may freeze but during spring, it may flood. throughout the year, the river continues to erode earth's surface
what is the difference between creeps and mudflows?
how does soil form?
soil forms as rock is broken down by weathering and mixes with other materials on the surface
what is PH scale?
Ph scales measure acidity
how do plants give off water?
through transpiration in their leaves
amount of rain an area gets,vegetation,type of soil,shape of land,how people use land
what happens when a mountain wears down in one place
new landforms build up in other places
how do living things affect soil?
some soil organisms make humus, the material that makes soil fertile. other soil organisms mix the soil and make spaces in it for air and water.
what is frost wedging?
when ice forces the rock apart and wedges of ice in rocks widen and deepen the cracks
the rates of evaporation and precipitation are balanced
true or false
true