Deck 1 - Tectonics distribution and plate boundaries

Question 1

What are two categories of tectonic hazard?

Answer 1

Seismic
Volcanic

Question 2

Where do the majority of earthquakes occur?

Answer 2

The majority of earthquakes are found along plate boundaries. About 70% of all earthquakes are found in the ‘Ring of Fire’ in the Pacific Ocean

Question 3

What is a intra-plate earthquake?

Answer 3

Intra-plate earthquakes occur in the middle of a tectonic plate

Question 4

What secondary hazards are associated with earthquakes?

Answer 4

Landslides, avalanches, tsunamis

Question 5

Where are the majority of volcanoes found?

Answer 5

There are about 500 active volcanoes around the world with on average 50 erupting each year. The majority are found on plate boundaries with a large concentration around the Pacific Ocean (Ring of Fire

Question 6

What is a hot spot volcano?

Answer 6

An intra-plate volcano that is located above a mantle plume

Question 7

What is a constructive (divergent) plate margin?

Answer 7

A plate boundary where tectonic plates are moving away from each other allowing for magma to move to the surface to create new land

Question 8

What is a destructive (convergent) plate margin?

Answer 8

A plate margin where tectonic plates are moving towards each other. Oceanic plate is denser than continental plate meaning it is subducted

Question 9

What is a conservative plate margin?

Answer 9

A plate margin where tectonic plates move alongside each other. Plates are either moving in opposite direction or the same direction at different speeds

Question 10

What is a collision boundary?

Answer 10

A destructive margin where both plates are of equal density meaning that neither plate subducts resulting in an upwards buckling creating fold mountains such as the Himalayas.

Question 11

Which type of plate boundaries do you find earthquakes at?

Answer 11

All

Question 12

Which type of plate boundary do you find volcanoes at?

Answer 12

Constructive and destructive