World Geography - Chapter 2 Section 3-4
Terms in this set (21)
Enormous moving pieces of the earth's lithosphere.
A fracture in the earth's crust.
The violent movement of the earth, provided when tectonic plates grind past each other.
A device used to measure the size of the waves created by an earthquake.
The point on the Earth's surface that corresponds to the location in the earth where an earthquake begins.
A natural event formed when magma, gases, and water from the lower part of the crust or mantle collect in the underground chambers and eventually erupt and pour out of cracks in the earth's surface.
Four types of plates:
Divergent, convergent (subduction), convergent ( collision), and transform.
How do folds and faults form?
When two plates meet each other or slide past each other.
How do tectonic plates shape the earth's surface?
The plates' position changes and moves through collision and shifting.
How are volcanoes formed?
When magma from within the Earth's upper mantle makes its way to the surface. Friction between tectonic plates causes volcanoes to erupt.
Ring of Fire
Made of several tectonic plates, which move constantly; magma flows beneath the boundaries of these plates. This is home to frequent earthquakes and volcanoes.
The chemical and physical processes that change the characteristics of rock on or near the earth's surface, occurring slowly over the years.
Small pieces of rock produced by weathering processes.
A fan like land form made of deposited sediment, left by a river that slows as it enters the ocean.
The changing of land forms by slow moving glaciers.
Organic material in soil.
What factors affect soil composition?
Parent material, relief, organisms, climate, and time.
Difference between mechanical and chemical weathering:
A. Mechanical weathering only changes the physical traits of a rock.
B. Chemical weathering changes the rock's composition.
Three types of eroding action by water:
A. When water in a river picks up sediment.
C. Wave action
What factors contribute to the soil's fertility?
Soil's texture, amount of organic material, and the amount of water and air.
Question to Think About:
How does erosion affect humans?
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