Shared Flashcard Set

Details

Chapter 1
Volcanoes and Earthquakes
15
Science
Not Applicable
05/10/2005

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Cards

Term
Crust
Definition
The thin outer layer of the earth
Term
Mantle
Definition
The middle layer of the earth
Term
Magnetic Field
Definition
The space around a magnetic withhin the force of the magnet exerted
Term
Magnetic Reversal
Definition
The space around a magnet where the effects are felt
Term
Mid-Ocean Ridge
Definition
A chain of mountains under the ocean
Term
Plate Boundry
Definition
A place where plates interact and make up the crust and upper mantle
Term
Sea-Floor Spreading
Definition
The process by which new ocean floor is continually being formed as magma rises to the surface
Term
Plates(Tectonic Plates)
Definition
One of the slabs that make up Earths crust and upper mantle.
Term
Theory of Continental Drift
Definition
The theory that the continents once formed a single landmass and that the continents are still moving along currents in the Earth’s mantle
Term
Theory of Plate Tectonics
Definition
The theory that earths lithosphere is broken up into enormous slabs that are in motion.
Term
Pangaea
Definition
The supercontinent from which current continents are thought to have broken off
Term
Continental Shelf
Definition
The part of a continent that sits underwater
Term
Earthquake
Definition
Movement of the Earth caused when two pieces of the Earth’s crust rub against each other
Term
Magma
Definition
Molten rock from the Earth’s core
Term
Magnetometer
Definition
A device used to study magnetic fields
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