Unit 5b Study Guide

Which type of rock is most abundant in Earth's crust?

• organic

• igneous

• sedimentary

• metamorphic

Living organisms are found on what layer of Earth?

• the mantle

• the core

• the crust

• the inner core

Tags

NGSS.MS-LS2-3

What contributes to Earth's high internal temperature?

• sunlight

• ,eclipses

• magnesium

• radioactive elements

Which of the following describes the inner core of Earth?

• It is loose, primarily composed of silica particles, is under the least amount of pressure, and is between 70 and 200 kilometers thick.

• It is dense, composed primarily of solid iron, is under the most pressure with the highest temperatures, and is 1250 kilometers thick.

• It is solid, made up of magnesium and iron, has the lowest temperatures of any layer, and is 2900 kilometers thick.

• It is made up of mainly of silicon and aluminum, has moderate temperatures, and is only 200 kilometers thick.

Which two elements make up the largest amount of Earth's crust?

• carbon and nitrogen

• phosphorus and carbon

• silicon and carbon

• silicon and oxygen

The lithosphere is one of Earth's layers. What makes up the lithosphere?

• the inner and outer cores

• the upper and lower mantle

• the mantle and outer core

• the crust and upper mantle

Scientists map the interior of the Earth using seismic waves. Seismic waves do not travel through liquid. Which part of the interior would seismic waves not be able to penetrate

• lithosphere

• ,inner

• outer core

• mantle

The picture below shows a model of Earth's layers.What can be said about Layer 3?

• It is the lower mantle, composed of solid, high density rock.

• It is the upper mantle, composed of semiliquid, slowly moving rock.

• It is the outer core, which forms a cool, rigid shell around the inner core.

• It is the lithosphere, which forms a rotating, liquid layer around the mantle

Tags

NGSS.MS-ESS2-1

The picture shows a model of Earth's layers.Which statement best describes Layer 2?

• It is the upper mantle made mostly of solid rock.

• It is the lithosphere where Earth's heat is generated.

• It is the solid inner core where semiliquid magma flows.

• It is the liquid outer core made mostly of nickel and iron.

Tags

NGSS.MS-ESS2-1

Which statement BEST describes one difference between Earth's mantle and crust?

• The mantle is less dense than the crust.

• The mantle is hot compared to the crust.

• The mantle is cool compared to the crust.

• The mantle is thin compared to the crust.