Earth Layers & Plate Tectonics

The surface of the Earth is called the...

• mantle

• outer core

• inner core

• crust

Convection currents occur in the....

• asthenosphere

• lithosphere

• inner core

• crust

What are two different types of crust?

• Lithosphere / mesosphere

• North American / Pacific

• continental/ oceanic

• Pangea / Gondwana

Which type of crust is more dense?

• Indian

• Antartic

• oceanic

• continental

Which part of the Earth is in liquid form?

• crust

• mantle

• outer core

• inner core

The outermost rigid layer of the earth that includes the crust and small amount of upper mantle is known as the...

• lithosphere

• inner core

• mesosphere

• mantle

How do scientists know about the structure of the Earth's interior?

• seismic waves from earthquakes

• lowering cameras

• drilling to the core

• weather patterns

Hypothesis that states that the continents once formed a single landmass, then broke apart.

• lithosphere displacement

• plate movement

• continental drift

• sea-floor spreading

Scientist that came up with the hypothesis of continental drift was who?

• Harry Hess

• Alfred Marshall

• Harry Jones

• Alfred Wegener

Continents were once joined together in a single large landmass called ....

• Pangea

• Gondwana

• Laurasia

• Panthalassa