Layers of the Earth 6th Grade REVIEW

Which statement BEST describes the relationship between Earth's mantle and core?

• The mantle lies just below the core.

• The core is denser than the mantle.

• Material in the core and mantle combines to form tectonic plates.

Earth's lithosphere is composed primarily of which material?

• gas

• water

• magma

• rock

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 tectonic plates are made of a combination of the crust and the uppermost part of the mantle. What is this combination called?

• A. asthenosphere

• B. continental crust

• C. atmosphere

• D. lithosphere

Tags

NGSS.MS-ESS2-3

Living organisms are found on what layer of Earth? A. the mantle B. the core C. the crust D. the inner core

• A. the mantle

• B. the core

• C. the crust

• D. the inner core

Tags

NGSS.MS-LS2-3

Which description best represents heat flow and movement in Earth's mantle?

• When magma is heated, it becomes more dense and sinks. When magma is cooled, it becomes less dense and rises.

• When magma is heated, it becomes less dense and sinks. When magma is cooled, it becomes more dense and rises.

• When magma is heated, it becomes more dense and rises. When magma is cooled, it becomes less dense and sinks.

• When magma is heated, it becomes less dense and rises. When magma is cooled, it becomes more dense and sinks.

Tags

NGSS.MS-ESS2-1

The picture shows a model of Earth's layers that Kenyatta was making. What mistake has Kenyatta already made in his model?

• He marked the inner core as a gas.

• He marked the outer core as a liquid.

• He put the outer core in the wrong location.

• He put the inner core in the wrong location.

Which layer of Earth is believed to be responsible for Earth's magnetic field?

• core

• upper mantle

• lower mantle

• crust

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 of the following shows where the asthenosphere, mantle, and core would be labeled on a model of Earth's layers?

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