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Y9 Geography
Our Earth
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akshara
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Cards (11)
Structure of The Earth:
A)
crust
B)
mantle
C)
outer core
D)
inner core
4
Crust:
thin
and
solid
Mantle:
move slabs of crust called
plates
-
convection currents
semi
molten
Outer Core:
liquid iron and nickel
Inner Core:
solid iron
and
nickel
- due to pressure
5500
degrees celsius
Plate Boundary:
boundary between
2 tectonic plates
Destructive/Convergent Plate Boundary:
2
plates pushing together
volcanoes
and
earthquakes
Constructive/Divergent Plate Boundary:
2
plates
move apart
from
eachother
lava flows
,
volcanoes
,
earhtquakes
Constructive/Transform Plate Boundary:
2
plates
slide
alongside eachother
earthquakes
Why do people live near tectonic plates?
Environmental:
soils are
fertile
economical:
attract tourists -
jobs
minerals found -
mining jobs
cheaper
living
cheap
geothermal
energy
Social:
people don't want to leave loved ones
buildings are designed with
disasters
in
mind
community is important
people think
risk level
is
low
people think there are
adequate warning
Managing Volcanic Risks:
Planning:
deciding what to do in the
future
Preparation:
acting on what you
planned
Prediction:
guessing
based on other events