Plate Techtonic

Question 1

Focus of an earthquake

Answer 1

The centre of the earthquake.

Question 2

Epicentre

Answer 2

In the surface of the Earth directly above the focus.

Question 3

Primary waves of earthquakes

Answer 3

Arrive first and fast. Travel through solid rock snd fluids. Push and pull in the direction they move in. Transfer energy from focus to epicentre.

Question 4

Secondary Waves

Answer 4

Only move through solid rock. Move in an up and down motion. Transfer energy from focus to epicentre.

Question 5

Surface waves

Answer 5

They travel through the surface of the crust in a rolling motion. The ground moves side to side and is responsible for most of the shaking people feel.

Question 6

Rayleigh Waves

Answer 6

They move in an up and own motion and only travel through the crust.

Question 7

Constructive waves

Answer 7

When the plates are moving away from each other. The result of this is often shield volcanoes.

Question 8

Destructive waves

Answer 8

When an oceanic plate is forced under a continental plate. This causes extreme pressure in the mantle forcing lave up through the crust. This zone of high pressure is called the subduction zone.

Question 9

Conservative boundary

Answer 9

When two plates are sliding past each other. If the two plates get stuck and suddenly slide past each earthquakes are released.