30/5/21 Flashcards
(20 cards)
Name two natural causes of drought
Meteorological and hydrological
Name two human causes of drought
Deforestation and dam construction on a large river
What is the role of global circulation
Where Hadley and Ferrell cells are, dry descending air means there is little precipitation
Hazards of Cali drought
Subsidence, contamination, wildfires
Name some hazards of the Ethiopia drought
Reduction in crop yields, longer journeys to find water, migration, loss of habitat
What were some Cali responses
Public education campaigns, laws on water usage
Responses of Ethiopia
Overseas gov aid, aid agencies like oxfam, large charity events like live aid
How does earth receive heat energy
Sun (solar radiation)
How is Gulf Stream created
Cold denser water sinks and warmer water becomes the surface water creating ocean currents
What is the milankovitch cycle
Long term changes to earths orbit and position, changing how much solar radiation earth receives
Name some negatives of climate change
- Melting ice sheets rising sea lvl and could cause Gulf Stream to go further south leading to colder temps in Western Europe
- Rising sea lvl causes flooding causing soils to become contaminated with salt causing plants to die
- Cause less rainfall, lowering crop yield
- Low islands will have to be evacuated (displacement)
Name some human causes of climate change
Energy, industry, transport, farming
Name an impact of climate change due to UK’s location
Prevailing winds travel across Atlantic Ocean bringing moisture leading to more rainfall
Name some hazards of tropical cyclones
- High winds - Uproot trees and buildings
- Storm surges - Cause large mass of water to hit land
- Intense rainfall - Flooding, damaging property
Social impacts of hurricane Sandy
- Death toll 150
- Areas left without electricity
- Homes and businesses damaged
- Schools closed for days
Name some economic impacts of hurricane Sandy
- Property damage US$65billion
- Income from tourists affected (cancellation of events)
- Gov had to pay for petrol as supplies ran out
Name some environmental impacts of hurricane Sandy
- Storm surge affecting coastal nature reservoirs
* Raw sewage leaked into water
Social impacts of typhoon Haiyan
- 6,000 deaths
- Loss of power
- 600,000 people displaced
- Many homes destroyed
Environmental impacts of typhoon haiyan
- mangroves damaged across islands
- Trees uprooted
- Oil spills from tankers caused sea pollution
I convincing impacts of typhoon haiyan
- US$2 billion
* Damaged infrastructure blocked transport across islands making provision of aid and support difficult and expensive
