Chapter 8 Geography: Section 2

The crust is thickest under mountains and thinnest under the oceans.

True.

The ocean floor is created along midocean ridges.

True.

The Hawaiian Islands were formed as a result of

a rising plume of magma from the mantle.

Coal is a fossil fuel formed from

plants.

At which of the following locations is new ocean crust being formed?

rift zones.

Several large, linear lakes are forming in East Africa. This is evidence of what process?

rifting.

Which of the following supports the continental drift concept?

All of them.

Which of the following are located along the midocean ridges?

volcanoes.

The deepest places in the ocean are those in which rifting occurs.

False.

Pangea is currently dated at

225 to 200 million years ago

Which of the following is false?

The Hawaiian island chain will subduct in approximately 40 million years (false- it will take MUCH LONGER)

Plate boundaries are associated with

all- rifting, subduction, volcanoes, earthquakes.

At which of the following locations does subduction occur?

along collision zones between continental and oceanic plates

The ocean floor subducts under continents because

the ocean floor has a lower density and therefore sinks more easily.