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Mantle correct answers Is not liquid, but ductile or plastic, which means that some parts can
flow under certain conditions and changes in pressure.
Composed mainly of aluminum and silicates
Crust correct answers The outermost solid layer of earth. It is the lithosphere.
Core correct answers The innermost layers of the Earth. Mainly composed of nickel and iron
Inner Core correct answers Solid. Temperatures and pressures are extreme.
Outer Core correct answers A layer of liquid iron and nickel beneath the mesosphere. The
only layer of Earth that is a true liquid
What is the outer core made up of? correct answers Nickel and iron
Lithosphere correct answers The outermost and most rigid mechanical layer of Earth.
Includes the crust, and the top of the mantle
Biosphere correct answers The global sum of all ecosystems and living organisms
Atmosphere correct answers The layer of gases that surround the planet
Troposphere correct answers The lowest layer of the atmosphere. Contains weather.
Hydrosphere correct answers All the water on earth
Cryosphere correct answers The masses of frozen water
What percentage of Nitrogen makes up the Earth's atmosphere? correct answers 78%
What percentage of Oxygen makes up the earth's atmosphere? correct answers 21%
What percentage of Argon makes up the Earth's atmosphere? correct answers .09%
What percentage of carbon dioxide makes up the Earth's atmosphere? correct answers .01%
What percentage of Helium and neon makes up the Earth's atmosphere? correct answers
Small traces
Geologic formations are formation made from what? correct answers Rocks
Mountains correct answers Formed as a result of Earth's tectonic plates smashing together
, Volcanoes correct answers Formed when magma from within Earth's upper mantle erupts
through the surface
Canyons correct answers Formed by weathering and erosion caused by the movement of
rivers. Also formed by tectonic activity.
Earthquakes correct answers Usually caused when plates rub against each other in the
opposite motion, and rock underground suddenly breaks along a fault. This sudden release of
energy causes seismic waves to make the ground shake
Ring of Fire correct answers A ring of volcanoes around the outer edge of the Pacific Ocean.
Seismic Waves correct answers An elastic wave caused by an earthquake
Primary (P waves) correct answers These are the fastest of the three types of seismic waves
and can travel through solid, liquid, and gases
Secondary (S waves) correct answers Travel through the Earth's interior at about half the
speed of primary waves. Can travel through rocks, but not liquids or gases
Surface Waves correct answers Seismic waves that move along Earth's surface, not through
its interior. Slowest of the three types of seismic waves
Tsunamis correct answers Giant waves caused by an earthquake or volcanic eruptions under
the sea
Plate Tectonics correct answers The theory that Earth's outer shell is divided into several
plates that glide over the mantle or the rocky inner layer above the core. The plates move and
separate, causing earth to separate and change
Divergent correct answers Pulling apart
Convergent correct answers Coming together
Subduction correct answers Sideways and downward movement of the edge of a plate into
the mantle beneath another plate
Soil correct answers A mixture of minerals, organic matter, gases, liquids, and many
organisms that together support the life on Earth
Water Cycle correct answers A continuous circulation of water throughout earth and the
atmosphere
Precipitation correct answers Any form of water that falls from clouds. Rain and snow are
examples of this.
Evaporation correct answers When water turns from a liquid to a gas
Condensation correct answers When water vapor turns back into a liquid-water collects as
droplets on a cold surface when humid air is in contact with it, forming clouds