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The Formation of the Earth

Across
Group of outer planets
The first element to form after the Big Bang
The layer of soft but solid mobile rock found below the lithosphere.
describes how molten material changed position in the planet based on density
did not form until the Earth’s core formed
Formed when the oceanic crust began to separate or rift apart
Cycle: I.D. problem-->Ideas-->Test-->Analyze
floats on the asthenosphere and is the rigid rock layer the crust sits on.
Formed about 5 billion years ago
Planet that experience runaway greenhouse effects
Below the asthenosphere. It is more rigid due to heat and pressure
The second element to form after the Big Bang
The only physical layer that is a liquid. It flows around a solid helping to generate a magnetic field.
Down
is found in solid masses and as a dissolved solution in the oceans and in salt lakes
states all matter was created 13.7 billion years ago as an area of intense temperature and gravitational pressure began to expand
The layer that separates crust from core
Force of attraction between all masses in the universe
Produced atmospheric oxygen
is a chemical reaction that converts carbon dioxide and water to glucose and oxygen
the protoplanet that struck Earth and helped form our moon(s)
describes the addition of material to the planet from space
energy that a body possesses by virtue of motion
the solid, physical layer of the Earth composed of an alloy of iron and nickel.
the layers of gases that surround a planet
9-50 miles thick and makes up 1% of the Earth’s mass