Unit 8.2 The Restless Earth

The thin and solid outermost layer of Earth.

• crust

• mantle

• core

• lithosphere

The compositional layer of rock between the Earth's crust and core.

• asthenosphere

• mantle

• mesosphere

• lithosphere

The central part of Earth below the mantle, is very dense.

• crust

• lithosphere

• asthenosphere

• core

The solid, outermost physical layer of Earth, that consists of the crust and the rigid upper part of the mantle.

• lithosphere

• asthenosphere

• mesosphere

• crust

The putty-like, physical layer of the mantle, on which the tectonic plates move.

• lithosphere

• asthenosphere

• mesosphere

• inner core

Tags

NGSS.MS-ESS2-1

The strong, lower part of the mantle, the physical layer between the asthenosphere and the outer core.

• lithosphere

• crust

• mesosphere

• inner core

A wave of energy released by an earthquake, that travels through the Earth and away from an earthquake in all directions.

• seismic wave

• convection current

• seismograph

• sound wave

Tags

NGSS.MS-ESS3-2

NGSS.MS-PS4-1

The hypothesis that a single large landmass broke up into smaller landmasses to form the continents, which then drifted to their present locations; the movement of continents.

• plate tectonics

• continental drift

• convection current

• sea-floor spreading

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The theory that Earth’s outer layer is made up of large, moving pieces.

• plate tectonics

• continental drift

• convection current

• sea-floor spreading

Tags

NGSS.MS-ESS2-3

The process by which new oceanic lithosphere (sea floor) forms when magma rises to Earth's surface; older, existing sea floor moves away from the ridge.

• plate tectonics

• continental drift

• convection current

• sea-floor spreading

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3