Earth's Layers Quiz

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<p>Mostly liquid iron and nickel (C)</p> Signup and view all the answers

<p>It has immense pressure on it from the layers above (C)</p> Signup and view all the answers

The outermost layer of the Earth, composed of relatively light, solid rock.

There are two types of crust: Continental crust, which makes up the landmasses, and oceanic crust, which forms the ocean floor.

The thick layer below the crust, made mostly of hot, semi-solid rock. It's where convection currents drive tectonic plate movement.

The layer surrounding the Earth's inner core, made up primarily of liquid iron and nickel.

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The solid, dense sphere at the Earth's center, composed mainly of iron and nickel. The immense pressure from surrounding layers keeps it solid.

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The crust is the thinnest layer of the Earth, with a thickness ranging from 5-70 km.

The mantle is the layer of the Earth that contains convection currents, which are slow, circulating movements of hot, viscous rock that move the tectonic plates.

The outer core is a liquid layer, composed of a nickel-iron alloy, and is about 2,250 km thick.

Scientists believe the inner core is solid due to seismic data, which shows that seismic waves generated by earthquakes travel faster through the inner core than through the outer core, indicating that it is more rigid.