Earth Layers Interactive Flash Cards

Earth Layers Interactive Flash Cards

Earth is composed of distinct layers, each playing a vital role in its structure and processes. The crust, Earth’s outermost layer, consists of solid rock and includes continental and oceanic regions. Beneath it lies the mantle, a thick layer of semi-solid rock where convection currents drive plate tectonics. The outer core, made of molten iron and nickel, generates Earth’s magnetic field. At the center is the inner core, a dense, solid sphere of iron and nickel. These layers interact to shape Earth’s surface, create natural phenomena like earthquakes and volcanoes, and sustain life by maintaining a stable planetary environment. Master 15 essential terms about Earth Layers by studying these Earth Layers Interactive Flash Cards. Click on Flip to reveal the definition. Click Flip again to go back to the term.

Interactive Flashcards

Crust

The layer of rock that forms Earth’s outer surface.

Mantle

The layer of hot, solid material between Earth’s crust and core.

Outer Core

A layer of molten iron and nickel that surrounds the inner core of Earth.

Inner Core

A dense sphere of solid iron and nickel at the center of Earth.

Lithosphere

A rigid layer made up of the uppermost part of the mantle and the crust.

Asthenosphere

The soft layer of the mantle on which the lithosphere floats.

Basalt

A dark, dense, igneous rock with a fine texture, found in oceanic crust.

Granite

A usually light colored igneous rock that is found in continental crust.

Tectonic Plates

Sections of the Earth’s crust that move due to convection currents.

Continental Crust

The portion of the earth’s crust that primarily contains granite.

Oceanic Crust

The portion of Earth’s crust that is usually below the oceans.

Convection Currents

Circular currents in the mantle caused by the magma being heated by the core off the Earth.

Temperature

A measure of how hot or cold something is.

Pressure

The force exerted on a surface divided by the total area over which the force is exerted.

Seismic Waves

Vibrations that travel through Earth carrying the energy released during an earthquake.

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