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Which state of matter is the earth's inner core?

• plasma

• liquid

• solid

• gas

Which earth layer is made up of the upper mantle and the crust?

• core

• lower mantle

• asthenosphere

• lithosphere

Which scientist is credited with the Theory of Plate Tectonics (modern version of the Theory of Continental Drift)?

• Alfred Wegener

• Charles Darwin

• Robert Hooke

• Charles Lyell

What is geology?

• the study of rocks

• the study of history

• the study of maps

• the study of earth

What was an evidence for plate tectonics that was claimed by the author of the theory?

• plate measurements

• knowledge of the mantle

• fossils on the coasts

• the movie Ice Age

This layer of the earth is the thickest part

• crust

• outer core

• mantle

• inner core

This layer of the earth is the thinnest part

• crust

• outer core

• mantle

• inner core

The one large land mass before it drifted apart was called

• Panthalassa

• Terra

• Pangaea

• Pandora

The waves of energy that travel through the earth's layers are

• scenic waves

• tidal waves

• cosmic waves

• seismic waves

Which are the layers in the correct order from Earth's surface to core?

• Mantle, crust, core and upper mantle

• Crust, core, upper mantle and mantle

• Crust, upper mantle, mantle and core

• Core, mantle, upper mantle and crust