Unit 2.1 Layers of the Earth

Which layer of the Earth is primarily composed of solid rock and is the outermost layer?

• Mantle

• Crust

• Outer Core

• Inner Core

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What is the primary characteristic of the Earth's mantle?

• It is a solid metallic layer.

• It is a hot, convecting layer.

• It is a liquid metallic layer.

• It is a gaseous layer.

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Which of the following processes is primarily responsible for the formation of mountains?

• Erosion

• Heat flow and movement of material within Earth

• Weathering

• Sedimentation

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What is the main difference between the Earth's outer core and inner core?

• The outer core is solid, and the inner core is liquid.

• The outer core is liquid, and the inner core is solid.

• Both are solid.

• Both are liquid.

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Which layer of the Earth is responsible for the generation of Earth's magnetic field?

• Crust

• Mantle

• Outer Core

• Inner Core

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What natural phenomena are caused by the movement of material within the Earth?

• Tornadoes and hurricanes

• Earthquakes and volcanic eruptions

• Tsunamis and floods

• Droughts and wildfires

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Which layer of the Earth is known for its tectonic activity?

• Crust

• Mantle

• Outer Core

• Inner Core

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What is the primary composition of the Earth's inner core?

• Silicate rocks

• Liquid iron and nickel

• Solid iron and nickel

• Molten rock

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Which geological feature is created by the movement of tectonic plates?

• River valleys

• Ocean basins

• Sand dunes

• Glaciers

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What is the primary role of the Earth's lithosphere?

• It is the source of Earth's magnetic field.

• It is the rigid outer layer that includes the crust and upper mantle.

• It is the layer where convection currents occur.

• It is the layer composed of liquid metal.

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