Paper 1-Tectonic Hazards Revision

Question 1

What causes plates movements?

Answer 1

Covenction currents

Question 2

Tectonic hazards caused by a constructive plate boundary?

Answer 2

Non violent shield volcanoes with basic lava and no pyroclastic blast.
Earthquakes
New land is formed

Question 3

Tectonic hazards caused by a destructive plate boundary?

Answer 3

Violent composite volcanos
Massive earthquakes
Tsunamis
Pyroclastic blast

Question 4

Tectonic hazards caused by a collision plate boundary?

Answer 4

Huge earthquakes very often as they are constantly pushing together

Question 5

Tectonic hazards caused by a conservative plate boundary?

Answer 5

Huge earthquakes as they get caught

Question 6

Continental drift theory

Answer 6

Proposed by Alfred Wegener, he suggested Pangea a super continent. As all the continents fit together. The huge ocean around it was called Pathalassa.

Question 7

Evidence for continental drift theory

Answer 7

Similar fossils on far apart continents
Similar rock types
Continents fit together
Fossils didn’t match modern climates 
Plates more around 35mm a year that’s 1.75 meters in 50 years

Question 8

Characteristics of continental crust

Answer 8

Land
Older
Less dense
Strong

Question 9

Characteristics of oceanic crust

Answer 9

Oceans
Younger
Dense
Weak

Question 10

How is a tsunami formed?

Answer 10

Earthquakes displace water
Water rushes to fill gap in plates
And as it pops back up the displaced water is forced upwards
This builds causing a large wave to form
As it travels across the ocean it grows