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11 Cards in this Set

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density
the mass per unit of volume of a material or substance
Newton's Law of Gravitation
the gravitational foce (F) between any two objects in the universe can be expressed by the formula F=gm1m2/d2
(force=the product of the masses of the two objects times the gravitational constant divided by the distance between them, squared)
core
the solid, innermost part of the Earth consisting mainly of iron
thermal convection
a pattern of movement in a fluid caused by heating from below and cooling from above
mantle
the section of the Earth that contains the most mass,composed mainly of iron, magnesium, and aluminum silicate minerals
crust
the thin outermost layer of the earth, with the least dense rocks
inner core
the innermost layer of the earth, under such great pressure that it remains solid
outer core
the outer layer of the core, hot enough that it is molten
plate tectonics
the field of study of plate motion; from the greek word "tekton"
continental accretion
the growth of a continent along its edges
hot spot
a narrow plume of unusually hot mantle material that originates at the boundary between the mantle and the outer core