Earth Layers

Front

The four layers that make-up the earth’s composition are: Crust, Lithosphere, Mesosphere and Core, Lithosphere, Asthenosphere, Mantle and Core, Crust, Mantle, Outer Core and Inner Core, Mantle, Outer Core, Lithosphere and Crust

Back

Crust, Mantle, Outer Core and Inner Core

Front

The plastic, semisolid layer that contains a convection current that moves the plates is called

Back

Mantle

Front

Large pieces of lithosphere that move around on the asthenosphere are called

Back

Tectonic plates

Front

The hypothesis that land masses spread apart from each other and have done so in the past is known as

Back

Continental drift

Front

Where does sea-floor spreading take place? Options: Convergent Boundaries, Transform Boundaries, Land Boundaries, Mid-Oceanic Ridges

Back

Mid-Oceanic Ridges

Front

The core is made-up of what two elements?

Back

iron and nickel

Front

What is the thinnest layer of the earth’s composition?

Back

crust

Front

The thickest layer of the earth is the

Back

mantle

Front

When the Crust sinks down into the Mantle what happens to it?

Back

It Melts

Front

The order of the earth’s compositional layers from most dense to least dense are: Inner Core, Outer Core, Mantle, Crust.

Back

Inner Core, Outer Core, Mantle and Crust