end of year review

Front

What caused the continents to drift?

Back

Volcanoes, earthquakes, seafloor spreading.

Front

What is the lithosphere?

Back

The solid, outer layer of Earth composed by the upper portion of the mantle.

Front

What does soil do for the Earth?

Back

It has nutrients and purifies water.

Front

What is a soil profile?

Back

Layers of the soil.

Front

What is thermal expansion?

Back

When an object expands due to temperature.

Front

What is the Earth's crust?

Back

The outermost layer of the Earth, part of the lithosphere.

Front

What is seafloor spreading?

Back

The process by which new oceanic crust is formed at mid-ocean ridges.

Front

What are tectonic plates?

Back

Large sections of the Earth's lithosphere that move and interact.

Front

What is erosion?

Back

The process by which soil and rock are removed from one location and transported to another.

Front

What is weathering?

Back

The breaking down of rocks and minerals into smaller pieces.