Earth Composition Review

Which best describes the Earth's crust?

• It is the thickest layer of Earth.

• It is composed of continental and oceanic plates.

• It contains layers of stationary rock.

• It is more dense than the other layers of Earth.

Which layer of the Earth is the thickest layer and is made mostly of magma?

• Inner Core

• Outer Core

• Mantle

• Crust

The main difference between Earth's inner core and outer core is that __________.

• one is liquid and the other is solid

• one is made of iron and the other is made of nickel

• one is the thickest layer and the other is the thinnest layer

• one has convections currents and the other does not

Tags

NGSS.MS-PS1-1

Which best describes the density of Earth's layers?

• The crust is the most dense because it is the top layer.

• The mantle is the most dense because it is the thickest layer.

• The outer core is the most dense because it is the only liquid layer.

• The inner core is the most dense because it is under the most pressure.

Earth is made up mostly of these three materials:

• water, gases, and rock

• sedimentary, igneous, and metamorphic rock

• crust, mantle, and core

• iron, nickel, and magma

__________ are the underlying force that drives plate tectonics.

• Convection currents

• Conduction currents

• Radiation currents

• Absorption currents

Tags

NGSS.MS-ESS2-3

A __________ is the area where two tectonic plates meet.

• boundary

• fault

• focus

• slip

A crack in the Earth's crust along which there is movement is called a __________.

• fault

• focus

• boundary

• slip

The point beneath Earth's surface where rock breaks under stress and causes an earthquake is the __________ point.

• focus

• fault

• boundary

• slip

A __________ occurs when the mantle causes the lithosphere to move apart.

• divergent boundary

• convergent boundary

• transform boundary

• strike slip fault