Earth Layers and Plate Tectonics

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

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

Back

Tectonic plates

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? Options: mantle, inner core, crust, outer core

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

Front

Tectonic plates are made up of continental crust and ________ crust.

Back

oceanic

Front

What is the theory that all continents were once joined together in one single large landmass?

Back

Continental Drift