Earth's Layers & Plate Tectonics

About _ years ago, the land masses of Earth were joined to make the super continent Pangea ?

Convection currents cause ___.

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___ was the first to propose the Continental Drift Theory.

The Earth’s crust is broken into plates that move around is the ____ theory,

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What forms mountain ranges?

The Earth’s crust and the very top layer of the mantle form this rock layer is the ____.

The ___ layer of the earth is made up of mostly Iron and Nickel and has 2 layers.

Approximately ______ years ago, the land masses of Earth were clustered into Pangea.

Which example below is a type of land form feature?

The inner most layer of the earth is ____.

One piece of evidence that supports the theory of plate tectonics is

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Plates ________ causing changes in the sizes, shapes and positions of Earth’s continents.

North America has gradually grown in size over the past 4 billion years.

The outer most layer of the earth is the ___.

_ is when crust forms because magma pushes up and hardens in the rift zone between separations.

Transform boundaries neither create or destroy new crust.

How can crust disappear at the edge of a boundary?

Plates float on the surface of our Earth.

The ____ layer of the earth is made up of solid rock made of mostly Silicon and Oxygen.

Convergent boundaries form ____.

The ___ layer of the Earth is the most dense layer.