Science Grade 6: The Changing Earth Chapter 2
Terms
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- Asthenosphere is
- layer of the Earth below the listhosphere. It is not rigid
- Divergent boundary is:
- a place where the plates that make up the Earth's crust and upper mantle move away from one another.
- Convergent Boundary is:
- a place where the plates that make up the Earth's crust and upper mantle move together.
- Convection is:
- the process by which heat energy is transferred by a moving fluid
- A volcano is:
-
an opening in the Earth's crust through which hot gases, rock fragments, and molten rock erupt.
Also, magma erupts along convergent and divergent boundaries - A transform-fault boundary is:
- a place where the plates that make up Earth's crust and upper mantle move past one another
-
Fault block Mountains:
Some examples of these Mountains are: -
a mountain formed when masses of rock move up or down along a fault which are cracks in the Earth's crust
Examples:
Great Rift Valley Grand Tetons
Dead Sea Area -
Folded Mountain:
Examples of these mountains are: -
a mountain formed when two tectonic plates collide.
These plates(rocks) are squeezed together
Examples: Alps, Urals, Appalachians, Himalayas -
Dome Mountain
Examples of these mountains are: -
a mountain formed when magma lifts Earth's surface, creating a broad dome, or buldge. The magma cools and hardens under the surface fomring a buldge.
Examples: Sangre de Cristo, Big Horn, Black Hills, Longs Peak - Lithosphere:
- is the solid, rocky layer of Earth, including the crust and the top part of the mantle.
- Magnetic Field:
- is the space around a magnet within the force of the magnet when exerted
- Convection Current
- the path along which energy is transferred during convection
- Plate Boundary
- The places where the plates that make up the Earth's crust and upper mantle either move together or apart or move past one another.
- Theroy of Continental Drift
- The continent's formed a single land mass at one time in the past and have drifted over time to their present location.
- Theory of Plate Tectonics
- The Earth's lithosphere is broken into large slabs or plates that are in motion