Plate tectonics & boundaries

Question 1

Alfred Wegener

Answer 1

A German scientist who came up with the theory of continental drift

Question 2

Pangea

Answer 2

A supercontinent containing all of Earth’s land that existed about 225 million years ago.

Question 3

Tectonic plates

Answer 3

Large movable plates under the Earth’s surface.

Question 4

Convection Currents

Answer 4

Circular currents in the mantle caused by the magma being heated by the core off the Earth.

Question 5

Plate boundries

Answer 5

the edges of tectonic plates

Question 6

Sea Floor Spreading

Answer 6

The process where new oceanic crust is formed.

Question 7

Subduction

Answer 7

One plate going under another plate

Question 8

Primary waves (P-waves)

Answer 8

Travel the fastest through the Earth and can move through the solid and liquid layers of the earth

Question 9

Secondary waves (S-Waves

Answer 9

slower-moving, waves that can only travel through solids

Question 10

Continental drift

Answer 10

Theory that all of the continents on Earth used to be joined as one giant landmass before drifting apart