what does the inner layer of earth consist of?
solid nickel and iron
liquid nickel and iron
how hot is the inner core?
5,500°C
2,000°C
what does the outer core consist of?
what is the mantle layer made out of?
semi-molten rock
magma
how wide is the mantle layer?
2,900km
6,000km
what are the 2 tetonic plates called?
oceanic & continental
destructive & constructive
continental plates are...
thick & less dense
thin & more dense
oceanic plates are...
more dense & thin
less dense & thick
why do tetonic plates move?
rock in the mantle is moving below
inner core moves
what are destructive plates?
oceanic plate slipping under continental plate
2 plates moving away from eachother
what are constructive plates?
2 plates moving towards eachother
what are conservative plates?
two plate sliding past eachother
two plate crashing into eachother
what are collision plates?
two continental plates that collide and buckle
two plates that slide under eachother
where are shield volcanoes found?
constructive plate boundaries
destructive plate boundaries
where are composite volcanoes found?
what is a richter scale?
measure amount of energy released from earthquake
measure amount of energy released from volcanoes
what is a sign of an errupting volcano?
increase in gas emmissions
ground shaking
what is a preperation method?
create an exclusion zone around volcano
evacuate animals
(another preperation)
have emergency food and water supplies ready
have emergency boats
what is a composite volcano?
layers of ash & lava that have cooled into hardenered layers
layers of magma hardnered into layers
what is a shield volcano made up of?
lava only
magma & lava
what was the richter scale of the boxing day tsunami?
9.1
8.9
how high were the waves of the boxing day tsunami?
15-30m
40-60m
how many deaths did the boxing day tsunami cause?
230,000
500,000
what was a primary impact of the tsunami?
1.7 million people made homeless
5 million people without food
what is a secondary effect of the tsunami?
threat of disease from water sewage
transport links destroyed
what is another primary effect of the tsunami?
buildings destroyed
crops destroyed
what is another secondary effect of the tsunami?
5-6 million people without food
flooding
what is a primary response to the tsunami?
emergency supplies
providing jobs
what is a secondary response to the tsunami?
re-building and improving infrastructure
medical care
what are natural changes to climate change?
volcanic eruptions release ash into atmosphere which causes cooling
droughts and floods
what is a human cause of climate change?
cars burning fossil fuels
aestroid collisiom
what is global warming?
the burning of fossil fuel produces carbon dioxide
the melting of ice caps
what does global warming cause?
droughts & flooding
plants to die
what else does global warming cause?
melts polar ice caps - causes sea levels to rise
causes volcanic erruptions
what is an ecosystem?
a group of plants and animals that interact in their environment
a large ecosytem
what is a biome?
a large ecosystem
a large area of land
plants absorb ______ and produce _______
carbon dioxide - oxygen
oxygen - carbon dioxide
what does the biosphere provide?
food, medicine & raw materials
food, water and wood
what is a threat to the biosphere?
deforestation, mining, quarrying, pollution, farming
infrastructure, transport routes, mining, quarrying
what is deforestation used for?
timber, transport routes, building dams, mining materials
wood, paper, buildings, transport
what are National Parks?
parks that conserve natural areas of beauty in the UK
parks that conserve the safety of wildlife
what does altitude determin?
plant growth in different temperatures
how fertile soil is
a higher altitude =
low temperature
high temperature
how does soil effect a biosphere?
effects how fertile different area are
controls growth of plants
what are man made causes of global warming?
cattle ranches, coal mines that exposes methane & burning of fossil fuels - exposes carbon dioxide
evaporation from oceans that exposes water vapour & respiration from plants - carbon dioxide
what are natural causes of global warming?
burning of fossil fuels, coal mines, cattle ranching
what is the UK's seasonal weather in the North?
cool summers, cold/mild winters, heavy/steady rain all year
warm summers, mild winters, light rain in summer, heavy rain in winter
what is Uk's seasonal weather in the South?
cool summers, cold winters, heavy rain all year
what causes the uk's climate?
different air masses that meet in the British Isles
continental winds in the South East
what wind is in the South East?
continental wind
martime wind
what wind is in the North West?
arctic wind
what wind is in the North East?
arctic winds
tropical wind
what wind is in the South West?
tropical winds
What is a disadvantage of global warming?
deserts getting drier-desertification
longer growing seasons
air pollution
fewer deaths
what is a positive effect of global warming?
longer growing season
disease spread
less need for energy consumption
what is advantage of global warming in the UK?
increase in crops - potatoes and wheat
increase floods
better grass yield for livestock
water shortage
what is disadvantage of global warming in the UK?
increase in floods
fewer deaths in winter
high sea levels
reduction in energy