Science vocab

Question 1

Lithosphere

Answer 1

the part of Earth which is composed mostly of rocks; the crust and outer mantle.

Question 2

Asthenosphere

Answer 2

The layer of soft but solid mobile rock found below the lithosphere. The asthenosphere begins about 100 km below Earth’s surface and extends to a depth of about 350 km; the lower part of the upper mantle.

Question 3

Mantle

Answer 3

the layer of solid rock between Earth’s crust and core

Question 4

Fault

Answer 4

a crack in a body of rock that the rock can move along (related word: faulting)

Question 5

Inner Core

Answer 5

the solid, inner portion of Earth’s core, composed of an alloy of iron, nickel, and other heavy elements; rotates within the liquid outer core

Question 6

Outer Core

Answer 6

the liquid outer portion of Earth’s core, composed primarily of iron and nickel

Question 7

Continental Drift

Answer 7

the movement of Earth’s continents relative to each other

Question 8

Crust

Answer 8

the outermost rocky layer of a rocky planet or moon which is chemically distinct from an underlying mantle.