Science vocabulary 7th grade

The strength and vitality required for sustained physical or mental activity.

The envelope of gases surrounding the earth or another planet:

are waves of energy that travel through the core of the earth or other elastic bodies,

The continuous physical force exerted on or against an object by something in contact with it.

outermost solid shell of a rocky planet or moon

A dark, fine-grained volcanic rock that sometimes displays a columnar structure.

A very hard, granular, crystalline, intrusive igneous rock

layer of Earth between the core and crust

The crust and upper mantle of the earth.

he upper layer of the earth's mantle, below the lithosphere,

a liquid layer about 2,260 kilometers thick composed of iron and nickel

its innermost hottest part as detected by seismological studies, is a primarily solid sphere

Convection is the movement of molecules within fluids

The emission of energy as electromagnetic waves or as moving subatomic particles.

The movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to...

The process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature

The degree of compactness of a substance: