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Inside Planet Earth Vocab Challenge
Terms in this set (55)
Force that pushes on the ends of rock causing it to get thicker in the middle
Force that pulls on the ends of rock causing it to get thinner in the middle
Force that pushes in two opposite horizontal directions
Layer of the Earth that contains the crust and upper mantle
Occurs where one plate moves under another plate, such as the oceanic crust sinking below continental crust
Currents in the mantle responsible for the motion of the plates
Plates move away from each other; may create rift valleys
Plates move towards each other; may create mountains or subduction zones
Plates at this boundary slide past one another in two opposite horizontal directions
Shaking or trembling of the Earth's crust due to the movement of plates
Refers to the total amount of energy released during an earthquake
Fault line that lies closest to Central Illinois
Plate on which the United States is located
Ring of Fire
Area of volcanic and seismic activity that surrounds the Pacific plate
A volcanically active area of Earth's surface far from a tectonic plate boundary
Molten rock is at or above the Earth's surface
Molten rock below the Earth's surface
Increases as you go deeper inside Earth up to 13,000
Increases as you go deeper inside earth, such as 50,000 times more in the mantle than at the surface
Crust measures up to 5 mi thick under these; denser than continental crust
Crust measures up to 25 mi under these; less dense than oceanic crust
Created by the movement of liquid metal in the outer core
Metal found inside Earth's outer and inner core
One of the metals found inside Earth's inner core
In tectonic plates, the site at which an oceanic plate is sliding under a continental plate.
A deep valley that forms where two plates move apart, such as what is occurring in Africa
Fault in California that illustrates the effects of shearing on rocks
The name of the single landmass that broke apart 220 million years ago and gave rise to today's continents
Pangaea is composed of seven land masses using matching fossils and layers of basalt to prove it
A type of rock that forms from the cooling of magma or lava
May be classified as chemical, clastic, or organic
A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions.
A series of processes on the surface and inside Earth that slowly changes rocks from one kind to another
A naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition; makes up the rocks on earth
One of the sources of energy on earth; provides the energy for photosynthesis
A tapering structure hanging like an icicle from the roof of a cave, formed of calcium salts deposited by dripping water.
A column-like form that grows upward from the floor of a cavern.
Important energy source formed from the remains of plants from the Carboniferous Period
One of the first life forms found on earth; formed stromatolites
Compound believed to have caused the oceans to turn from green to blue
Used to describe the consistency of mantle rock
Volcanic rock that contains diamonds
Vibrations that travel through Earth carrying the energy released during an earthquake
First national park where volcanic activity and features can be observed
Outer core of the earth is larger than this object
A beautiful display of light in the sky that comes from interactions between particles from the sun's atmosphere and gases in the ionosphere.
Earth's inner core is growing at this amount in a year
Plates are estimated to move this amount each year
This planet's magnetic field collapsed as its core froze solid
The temperature of the surface of the sun, which can match those in the inner core
A theory stating that the earth's surface is broken into plates that move.
The hypothesis that states that the continents once formed a single landmass, broke up and drifted to their present locations
The process by which molten material adds new oceanic crust to the ocean floor
Believed to have reached wingspans over 2 feet during the Carboniferous Period
A meteoroid that passes through the atmosphere and hits Earth's surface.
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