Natural hazards and tectonic hazards

Question 1

What occurs at a destructive plate margin?

Answer 1

1. A continental and oceanic plate move towards each other.
2. The heavier and denser oceanic plate subducts beneath the continental plate.
   3.Frictionbetween the plate causes an earthquake to occur
   4.The oceanic plate continues to subduct into the mantle and melts
3. The oceanic plate melts into the mantle and mixes with sea water.
   6.This liquid then rises up through the cracks in the mantle, resulting in a volcanic eruption

Question 2

4 Layers of the earth

Answer 2

1. Crust - surface of the planet divided into two tectonic plates. The oceanic plate is heavier and denser than the continental plate.
2. Mantle - the second layer which is molten rock
3. Outercore - the third layer which is liquid nickel and iron
4. Innercore - the final layer which is solid nickel and iron

Question 2

Why do tectonic plates move

Answer 2

1.convection currents move the plates
2.Ridge push/ slab pull. Where the oceanic crust sinks into the mantle pulling the plate down with it

Question 3

What occurs at a conservative plate margin?

Answer 3

1. Two plates slide past each other
2. As the move they get caught on each other
3. Pressure builds up and is released as an earthquake when the plates suddenly jolt free

Question 4

What occurs at a constructive plate margin?

Answer 4

1. Two plates move away from eachother
2. Creating a gap in the earth
3. Magma from the mantle rises up to fill the gap leading to a volcanic eruption
4. Small earthquakes also occur due to the small movement of magma rising.

Question 4

What is a natural hazard

Answer 4

A natural hazard is an extreme event which threatens property and human life