Earth Layers & Earthquakes

Front

What does the theory of continental drift state?

Back

The continents were once joined in a super-continent and have moved over time.

Front

What is the outermost layer of the Earth called?

Back

Crust.

Front

What is the difference between oceanic and continental crust?

Back

The oceanic crust is thinner but more dense than the continental crust.

Front

What is the outer core made of?

Back

Layer of liquid metal.

Front

How do Earth's plates move?

Back

Earth's plates are constantly moving and changing the face of the earth.

Front

What is the lithosphere?

Back

The rigid outer layer of the Earth, consisting of the crust and upper mantle.

Front

What is the asthenosphere?

Back

The semi-fluid layer beneath the lithosphere that allows tectonic plates to move.

Front

What causes earthquakes?

Back

Earthquakes are caused by the sudden release of energy in the Earth's crust, often due to tectonic plate movements.

Front

What is a tectonic plate?

Back

A large slab of solid rock that makes up the Earth's lithosphere.

Front

What is subduction?

Back

The process where one tectonic plate moves under another and sinks into the mantle.