Global hazard patterns

Question 1

Asthenosphere

Answer 1

A semi-molten zone of rock underlying the Earth’s crust

Question 2

Conservative boundary

Answer 2

A boundary between plates where the movement of the plates is parallel to the plate margin and the plates slide past each other

Question 3

Constructive boundary

Answer 3

A boundary between plates where the plates are diverging

Question 4

Destructive boundary

Answer 4

A boundary between plates where the plates are converging

Question 5

Lithosphere

Answer 5

The crust of the Earth, around 80-90km thick

Question 6

Magma

Answer 6

Molten material that rises towards the Earth’s surface when hotspots within the asthenosphere generate convection currents

Question 7

Plates

Answer 7

Rigid, less dense ‘slabs’ of rock floating on the asthenosphere

Question 8

Hotspot

Answer 8

A localised area of the Earth’s crust with an unusually high temperature

Question 9

Plume

Answer 9

An upwelling of abnormally hot rock within the Earth’s mantle

Question 10

Inter-tropical convergence zone

Answer 10

A zone of low atmospheric pressure near the equator which migrates seasonally