Rocks and Weathering Mechanical And Chemical Weathering How Soil Forms Soil Conservation Types of Soil 100 100 100 200 200 200 300 300 300 400 400 400 500 500 500
The breaking down of rocks and other materials on Earth’s surface.
Weathering
The scraping of rock by wind blown pieces of rock
abrasion
Different kinds of rock weather at different ______.
Rates
Rocks weather faster in what type of climate?
wet
The minerals the make up a rock determines how fast it will _____
Weather
Ice wedging is a form of _______ weathering
Mechanical
Mechanical weathering in faster in a climate that is ______
cool
DAILY DOUBLE!!!
Acid rain, oxygen, carbon dioxide, the action of water, and living organisms are all part of ______ weathering.
Chemical
A rock containing iron has been chemically weathered by ______ if it becomes soft and crumbly and reddish brown color
oxygen
Plant growth is part of ______ weathering
Mechanical
The material on Earth’s surface in which plants can grow
soil
The _____ horizon contains a crumbly, dark brown soil that is a mixture of humus, clay, and other minerals
A horizon
The process that forms soil
weathering
Soil formation begins with the weathering of ______
bedrock
The soil in the B horizon
subsoil
The method of soil conservation when farmers leave dead plants in the soil in their fields
Conservation plowing
DAILY DOUBLE!!!!
The process in which farmers plant different crops in a field each year
Crop rotation
The name of the process that farmers plow their fields along the curves of slopes
Contour plowing
Soil that is rich in humus has high ______
Fertility
The A horizon that we want to preserve
Topsoil
The soil (that is not yet soil) in horizon D is ____
bedrock
Soil that is made up of an equal amount of clay, sand, and silt.
Loam
Living organisms in soil help to ______
Mix soil and make humus
Decomposers are the soil organisms that ____
Break down and digest the remains of dead organisms
The loose layer of leaves on the surface of soil is called ____