Period 1 Class 7

Underwater mountain ridge formed by plate tectonics

A feature of convergent plate boundaries, where two or more tectonic plates meet.

Who came up with the theory that continents use to be together?

A region of the Earth's crust where tectonic plates meet

A system for the detection of objects under water and for measuring the water's depth by emitting sound pulses

 Occur along spreading centers where plates are moving apart

Hot fluid or semi fluid material below or within the earth's crust from which lava and other igneous rock is formed

Plates which move slowly over the underlying mantle

A region of turbulent plasma between a star's core ?

Area on Earth where two or more lithosphere plates collide

Places where plates slide sideways past each other

Who proposed that the movement of the continents were a result of continental drift?

The gradual movement of the continents across the earth's surface through geological time

What is this called?

Name the 3 main layers of Earth