Natural Hazards

Question 1

2 reasons why a tropical storm looses energy

Answer 1

When they reach land because they are no longer receiving heat energy and moisture from the ocean
They drift too far north and the sea temperature gets too cold

Question 2

Conditions for a tropical storm to form

Answer 2

Water temperature of at least 26 degrees
60+ metres deep sea
Between 5 and 20 degreees of the north and south equator

Question 3

Is uk weather becoming more extreme

Answer 3

Becoming more extreme, as extreme weather events have been happing more frequently and they have been more severe, such as in 2009-2010 temp was -22.3 and snowfall in 2009 got to 22 inches ,
However weather isn’t more extreme as in 1963 temp got below -20 .

Question 4

Greenhouse gases eg

Answer 4

Methane, carbon dioxide

Question 5

Are primary or secondary effects more extreme of a tectonic hazard

Answer 5

Case study Haiti , mag 7 , prime = 220000deaths 300000 injured, secondary= 1.3 homes destroyed , cholera outbreak, tourist industry declined , looting
Primary effects are more extreme as people will be affected physically and so will there property whereas secondary will involve people needing to be relocated and debt , overall secondary wouldn’t happen if not for the primary

Question 6

How does deforestation lead to climate change

Answer 6

If there are fewer trees and plants, due to deforestation, then less co2 is removed from atmosphere this will then lead to an increase in temperature as more of the suns rays are being trapped in the atmosphere ( climate change )

Question 7

Destructive plate boundary

Answer 7

Sometimes called convergent or tensional.
Occurs between oceanic and continental. They push together causing the oceanic plate to go under the lighter continental plate. Friction causes melting of oceanic plate and may trigger earthquakes, magma rises up through cracks and erupts onto the surface

Question 8

Collision zones

Answer 8

When 2 continental plates collide , neither plate is forced under the other . So both are forced up and form mountains

Question 9

Constructive plate boundary

Answer 9

Occurs when plates move apart, volcanoes are formed as magma wells up to fill gap, eventually new crust is formed

Question 10

Conservative plate boundary

Answer 10

Occurs where plate slide past each other in opposite directions, or in same direction but at different speeds. Friction is eventually overcome and plates slip past in a sudden movement creating shockwaves which then produce an earthquake