Hazadous Earth Flashcards
When hot air rises it creates
Low pressure
3 natural causes of climate change
Milankovitch cycle
Volcanic eruption
Asteroids’ hit cause fire co2
3 Human activities causing global warming
transportation
farming
Industry
enhanced greenhouse effect
UV from sun
Some reflected
land and water absorb some
Greenhouse gases need to keep Earth warm
Increase greenhouse more trapping of heat
Evidence for climate change
Temp rising
Co2 level rising
sea level rising
Cyclone charateristics
Low pressure
Rotation (coroliss)
10 km high
Intensify tropical cyclones
26.5*C water temp
high humidity
Low wind
Dissapate tropical cyclones
Reach land (powered by water)
Cold water
How are tropical cyclones are formed
26.5 Sea temp
High humidity
Rapid cooling of air
low wind in one direction
Corolis effect (for the spin)
What makes a country vulnerable to tropical cyclones
Phycial - Low lying
Social - Poor area no money dense living
economic - No defence systems
Case studies Cyclones
USA Katrina
Philippines Haiyan
Earthquake case studies
Japan Earthquake/tsumami
Haiti
USA Cyclone problems
Failure in storm surge defences
evacuation not conducted right
Convergent plate boundary
When plates collide and one is subducted
divergent plate boundary
convection currents moves plate apart
Conservative plate boundary
Slide past each other
hotspots
are points on the Earth curst with high heat flow
Shield
Found on constructive plate
formed by thin runny lava
gentaly sloping slides
Low gas content
composite
destructive plate
Viscous and sticky lava
Steep sloping
Very violent
epicenter
above focus
Focus
cental point of earthquake (deep under)
Impacts of Earthquakes Pirmary
Death
destroy buildings
