Topic1 - Tectonic Processes And Hazards EQ1✅

Question 1

What is a tectonic hazard?

Answer 1

threats caused by the movement of tectonic plates that have the potential to cause damage to life, property, the environment, human activity and/or the economy

• include earthquakes and volcanic eruptions, aswell as secondary hazards like tsunamis
• classed as seismic or volcanic

Question 2

Outline the distribution of earthquakes around the world?

Answer 2

• main earthquake zones are found (often in clusters) alongside plate boundaries
• about 70% are in the ‘Ring of fire’
• the most powerful are at convergent or conservative boundaries
• rare intra-plate earthquakes can happen near the middle of plates - associated with ancient faults

Question 3

Outline the distribution of earthquakes with focus on oceanic fracture zones (OFZ)?

Answer 3

A belt of activity through the ocean along the mid-ocean ridges, coming ashore in Africa, the Red Sea, the Dead Sea rift and California

Question 4

Outline the distribution of earthquakes with focus on continental fracture zones (CFZ)?

Answer 4

A belt following the mountain ranges from Spain, via the alps, to the Middle East, the hamilayas to the East Indies and then around the pacific

Question 5

Outline the distribution of volcanos around the world?

Answer 5

• most active volcanoes occur at or near to plate boundaries
• about 75% occur around the ‘Ring of Fire’ surrounding the Pacific Ocean
• Volcanoes occur at convergent and divergent plate boundaries - also found at hot spots in the middle of plates like Hawaii

Question 6

Outline all seven of the major plates which form the bulk of the continents and the oceans?

Answer 6

• North American plate
• Eurasian plate
• Pacific plate
• South American plate.
• African plate
• Indo-Australian plate
• Antarctic plate

Question 7

Outline the distribution of tsunamis around the world?

Answer 7

• Over 70% of tsunamis occur around the Pacific Ocean
• 15% Mediterranean Sea, 9% Caribbean Sea and Atlantic Ocean
• caused by tectonic activity most occur due to activity at convergent boundaries

Question 8

What are the three categories of convergent boundaries?

Answer 8

• Oceanic - continental
• Oceanic - oceanic
• Continental - continental (also known as a collision boundary)

Question 9

Finnish 1.1