Energy and Earth's Systems (pg 1-3)

A source of heat within the earth.

• radioactive decay

• the sun

• biomass

Tags

NGSS.MS-ESS2-1

The process by which elements separated by density when the earth was hot and liquid.

• differentiation

• sinking

• grading

The amount of matter per unit volume of a substance.

• density

• gravity

• weight

Early in the earth's history meteorites, asteroids and planetesimals were constantly _ with the earth's surface.

• colliding

• avoiding

• cooling

Tags

NGSS.MS-ESS2-3

Uranium-238 is an unstable element that undergoes __. A process that releases heat within the earth.

• radioactive decay

• fusion

• ionization

Tags

NGSS.HS-PS1-8

Reorder the following from the outermost layer to the innermost layer.

• inner core

• outer core

• mantle

• crust

The rigid, solid crust and the rigid top of the mantle.

• core

• lithosphere

• asthenosphere

• mantle

The part of the upper mantle that is a plastic solid with the ability to slowly flow

• lithosphere

• asthenosphere

• core

• crust

Rock's on the earth's crust and mantle range from 2.5 to 3.0 g/cm3. How does this compare to the overall density of the earth?

• less dense

• more dense

• the same density

How does the density of the earth's interior compare to the density of it's surface?

• The interior has the same density as the surface.

• The interior is less dense that it's surface.

• The interior is denser than it's surface.

Tags

NGSS.HS-ESS1-5