Natural hazards

Question 1

Natural hazard

Answer 1

a natural event that threatens people, or has the potential to cause damage destruction and death

Question 2

types of natural hazard

Answer 2

tectonic hazards
weather hazards

Question 3

Factors affecting hazard risk

Answer 3

nature of the hazard
vulnerability
capacity to cope

Question 4

Slab pull

Answer 4

the process of older, denser sections of crust subducting into the mantle and pulling sections of new, light crust with it.

Question 5

ridge push

Answer 5

lava erupts to create crust as plates move apart. As it cools, it pushes down the slope of the top ridge, pushing the plates even further apart

Question 6

3 types of plate boundary

Answer 6

constructive
conservative
destructive

Question 7

destructive plate definition

Answer 7

plates move together

Question 8

constructive plates definition

Answer 8

two plates move away

Question 9

Conservative plates definition

Answer 9

two tectonic plates slide past each other.

Question 10

process of destructive plate boundary

Answer 10

1. Convection currents and slab pull move plates together
2. Oceanic plate subducts
3. Melting of the plate
4. Magma rises
5. Volcanic eruption of ash and lava.

Question 11

process of a constructive plate boundary

Answer 11

1. Convection currents and ridge push move plates apart.
2. Magma rises
3. Volcanic eruption of ash and lava
4. A ridge is formed as new crust is created.

Question 12

process of a conservative plate boundary

Answer 12

1. Convection currents move plates side by side
2. Plates lock together and pressure builds
3. Pressure is suddenly released in an earthquake with seismic waves released from the focus.