Restless Earth

Where is the Canadian Shield?

How long has it taken the Atlantic Ocean basin to grow to its present size?

Earth’s highest mountains form where plate convergence causes _______to collide.

If two plates collide, the younger of the two plates sinks below the other.

Large continents are gradually assembled out of many smaller pieces of lighter crust.

The North American plate includes all of the North American continent and:

Earth’s rigid crust is about 50 km thick beneath the ____________________.

Earth’s rigid crust is about ____ kilometers thick below the oceans.

What happens at a divergent plate boundary?

The size and location of landmasses directly influence physical environments.

The surfaces along which the plates slide are called transform faults or _____ faults.

On average, how fast do plates move?

The Antarctic ice cap is believed to be up to _____ kilometers thick.

The collision of the Indian continent with Eurasia has produced:

Scientists believe that in several million years, the Red Sea will become narrower

In what direction do plates move at convergent plate boundaries?

Most mountains are part of a ____________________ or long belt of mountains.

The Canadian Shield is characterized by:

The Olympic Mountains rise up along the west coast of:

Primitive continental crust is formed by ___________ that is localized above subduction zones.

The Arctic and Antarctic are known for their _____ conditions.

As the plates move apart, melting in the mantle generates ___ that migrates up the boundary.

In addition to forming mountains, tectonic movements also:

The movements of plates is localized along plate boundaries.

Plates move very slowly.

Mountains are inherently unstable landforms, because ___________constantly works to lower them.

Before the formation of the Rocky Mountains, ____________________ dominated the grasslands.

The continental plates are constantly moving, but the oceanic plates are not.

In subduction, the dense oceanic plates sink below the thick continental plates.

What eventually forms at divergent plate boundaries when continents split apart?