Answers 25-26 CHEMISTRY IN THE EARTH SYSTEM S1Earth's Interior

Earth's Interior Answers

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Study the diagram showing the range of temperature in the Earth’s layers.

The outer core is the hottest region.

The mantle is hotter than the outer core.

The continental crust is the coolest region.

The inner core is cooler than the lithosphere.

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Which statement describes how the mantle is similar to Earth’s oceanic crust?

It is composed mostly of basalt.

It consists primarily of molten rock.

It has varying degrees of thickness.

It is divided into two layers.

Which object can an S wave travel through?

air

magma

soil

water

Study the image of a seismic graph.About how far does the S wave travel through Earth in 13 minutes?

2,000 km

4,000 km

6,000 km

8,000 km

Study the table about Earth’s interior.Which conclusion is supported by information in the table?

The mantle is thinner than the crust.

The core is the thickest of Earth’s layers.

The inner core is thicker than the outer core.

The mantle is the thinnest of Earth’s layers.

Which statement describes a characteristic of the asthenosphere?

Temperatures are cool.

Consistency is solid.

Thickness is less than crust.

Pressure is higher than crust.

Why is Earth's outer core hotter than Earth’s oceanic crust?

Earth’s oceanic crust is denser than Earth’s outer core is.

Earth’s oceanic crust has lava flowing from the mantle.

Earth’s outer core has a composition of solid iron and nickel.

Earth’s outer core is deeper within Earth than oceanic crust is.

Which layer of Earth experiences the least amount of pressure?

crust

mantle

outer core

inner core

Study the diagram about the varying pressures of Earth’s Layers.

110 GPa

220 GPa

305 GPa

360 GPa

Which best explains how heat plays a role in the movement of materials within Earth’s interior?

Hot material near Earth’s surface is more dense and sinks, and when it cools, it becomes less dense and rises.

Hot material near the core is more dense and rises, and when it cools, it becomes less dense and sinks.

Hot material near Earth’s surface is less dense and sinks, and when it cools, it becomes more dense and rises.

Hot material near the core is less dense and rises, and when it cools, it becomes more dense and sinks.

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