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24 Cards in this Set

  • Front
  • Back
Equator
is an imaginary line that divides earth into the Northern and Southern Hemispheres.
Oblate Spheroid
a slightly flattened sphere.
Axis
is an imaginary straight line running through the earth from the North Pole to the South Pole.
Hydrosphere
All lakes, rivers, oceans, ect. that make up the earth's hydrosphere.
Atmosphere
is a blanket of gases surrounding earth.
Seismic waves
are vibrations that travel through the earth.
Crust
The thin, solid outermost zone of the earth.
Mass
is the amount of matter in an object.
Oceanic Crust
beneath the oceans the crust is called the oceanic crust.
Continental Crust
The part of the crust on which the continents rest on.
Mantle
Below the crust the mantle is located.
Lithosphere
The solid portion of the mantle and the crust above it makes the lithosphere.
Asthenosphere
is located just below the lithosphere.
Plasticity
The ability of a solid to flow is called plasticity.
Core
is located below the mantle.
P waves
P waves are primary waves.
S waves
S waves are secondary waves.
Shadow Zones
Locations on the earth's surface where neither S waves nor P waves are detected or where only P waves are detected.
Moho
their change in the speed of the waves marks the boundary between the crust and the mantle.
Magnetosphere
this area is affected by the earth's magnetic field.
Gravity
the forces of attraction that exists between all matter in the universe.
Law of Gravitation
this law states that the force of attraction between any two objects depends upon their masses and the distance between them.
Weight
is a measure of the strength of the pull of gravity on a object.
Newtons
weight is measured in newtons.