Rocks and Weathering Pt.1
The process of wearing down and carrying away rocks.
What is Erosion?
The process in which water squeezes in through rock cracks,freezes,then thaws. Repeating until the rock breaks off.
What is Frost wedging or Freezing and Thawing?
The loose weathered material on Earth's surface in which plants grow.
What is Soil?
The measure of how well the soil supports growth.
What is Fertility?
The process that breaks down rock and other substances
What is Weathering?
The weathering of rock by dissolving many rock particles at a time.
How does water weather?
The solid layer of partly weathered rock beneath the soil.
What is Bedrock?
A crumbly dark brown soil that is a mixture of humus,clay,and other materials.
What is Topsoil?
The type of weathering in which rock is physically broken into smaller pieces.
What is Mechanical Weathering?
The process where iron combines with oxygen in the presence of water.
What is Oxidation?
Decaying organic material in soil that forms as plant and animal remains decay.
What is Humus?
Soil that contains of clay and other particles of rock but little humus.
What is Subsoil?
The second type of weathering that breaks down rock through chemical changes.
What is Chemical Weathering?
When a rock is full of tiny connected air spaces that allow water to seep through it.
What is a Permeable rock?
The scale that measures acidity.
What is the pH scale?
The organisms that break down the remains of dead organisms into smaller pieces and digest them with chemicals.
What are Decomposers?
Geologists make inferences based on _______
Uniformitarinism
The wearing away of rocks by rock particles carried by water,ice,wind,or gravity.
What is Abrasion?
Soil that is made up of equal parts of clay,sand,and silt.
What is Loam?
holds soil in place
The role that grasses play in conserving the soil.