Earth's Structure Worksheet

Earth’s Structure

Use information from the following website: http://www.learner.org/interactives/dynamicearth/structure.html

2. _____________ – Divided into two sub regions, upper and lower, this dense layer made of hot semi rock is located directly below the ________ and is about 1800 miles thick.

Lithosphere – made up of the crust and tiny bit of the mantle, this layer is divided into several constantly (very slowly) moving plates of ___________ ________ that hold the continents and oceans

Asthenosphere – The plates of the lithosphere move (_____________) on this hot, malleable semi liquid zone in the upper mantle, directly below the lithosphere.

1. ____________ – hard and rigid, the Earth’s outermost and ____________ layer. Only a few miles (5 km) thick under the oceans and averaging 20 miles thick under the continents.

1.

4.

3.

2.

3. _________ _________ – The only __________layer of the Earth – a sea of mostly iron and nickel. It is roughly 1800 – 3200 miles below the surface and about 1400 miles thick. Temperatures reach __________° C.

4. __________ ________ – An extremely hot, solid sphere of mostly ________ and __________ at the center of the Earth. It is 3200 to 2to 3960 miles below the surface and about 750 miles in diameter.

How do you think scientists discovered the layers of our Earth?

Earth’s Structure Worksheet SHEARER

Use information from the following website: http://www.learner.org/interactives/dynamicearth/structure.html

1. Crust

Label the Layers of the Earth.

4. Inner Core

3. Outer Core

2. Mantle (Asthenosphere, Lithosphere)

2. Mantle – Divided into two sub regions, upper and lower, this dense layer made of hot semi rock is located directly below the crust and is about 1800 miles thick.

Lithosphere – made up of the crust and tiny bit of the mantle, this layer is divided into several constantly (very slowly) moving plates of solid rock that hold the continents and oceans

Asthenosphere – The plates of the lithosphere...