Definitions
The view that most of the earth's geographical features are the result of large-scale catastriphies such as floods, volcanic eruptions, etc.
What is the Catastrophism?
Rock formed from sand, silt, minerals, and other components of soil.
What is sedimentary rock?
Layers of sedimentary rock are called.
What is strata?
The process by which rock and soil are broken down and transported away.
What is Erosion?
The decayed remains of once-living creatures in the soil.
What is Humus?
Soil with a lot of this is ideal for planting gardents, trees, ect.
What is humus?
Rock formations come in various thicknesses. When a single layer is less than 1 centimeter thick it is this.
What is lamination?
This is an example of a process that can break down rocks and form sedimention that is caused by a plant's roots, when the plant is trying to get water and nutrients. They are strong enough to break apart the rock and turn it into sedimentary rock.
What is physical weathering?
What is Soil?
Igneous rock formed from molten rock.
What is magma?
277-mile long canyon in Arizona that is 4-18 miles deep and whose walls are composed of sedimentary rock.
What is the Grand Canyon?
What is chemical weathering?
The view that most of the earth's geographical features are the result of slow, gradual, processes that have been at work for millions or even billions of years.
What is Uniformitarianism?
Inorganic crystalline substances found naturally in the earth.
What is Minerals?
Several layers of 1 centimeter thick rock.
What is laminae?
This is an example of a type of weathering when wind picks up sand and other gritty material and slams them into rocks, the rocks will wear away.
What is physical weathering?
The topmost layer of soil.
What is topsoil?
What are the three kinds of rock that make up the earth's surface?
What is sedimentary rock, igneous rock, and metamorphoc rock?
The process by which rocks are broken down to form sediments.
What is weathering?
This is an example of weathering. A rock heats up and expands. When it cools it contracts. The constant temperature changes cause it to expand and contract over and over again causing stress. The stress causes the rocks to crack and break the rocks to sedimentary rock.
What is phyiscal weathering?