Plate Tectonics and Ocean Features

Where is the youngest oceanic crust?

A plate boundary where plates move apart.

Flat or gently sloping area of the deep ocean floor.

Which is more dense?

An island of coral that circles a lagoon either partly or completely.

A plate boundary where plates slide against each other.

A mountain rising from the ocean seafloor that doesn't reach the water's surface.

On which major tectonic plate does the U.S. reside?

When an oceanic plate and a continental plate collide, a _________ is often formed.

When 2 plates collide and one slips under the other, this is called ___________.

About how deep in the Mariana Trench?

The Mariana Trench was formed by ______________.

A flat-topped seamount

Made up of the crust and upper mantle.

This country has a divergent plate boundary going right through the middle of it.

What is this layer of the Earth?

The study of Earth's surface shape and features.

Large mountain ranges like the Andes and the Himalayas are formed by a(n) __________.

When hot mantle plumes breach the surface in the middle of a tectonic plate.

What is this layer of the Earth?

Which is younger?

A plate boundary where plates collide.

_______________ is the deepest.