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geography test T1
:)
36 cards·by Jason9548
What is the crust made from
hard rock
how deep is the crust
6-60km
Where are the thinnest and thickest layers of the crust found
thinnest- under deep oceans thickest- under tall mountains
How hot is the crust
1200 Celsius
What is the moho
the boundary between the crust and mantle
how thick is the mantle
2900km
what is the top layer of the mantle made from
hard rock
what is the rest of the mantle made from
semi-molten rock
how hot is the mantle
5000 Celsius
how thick is the core
3400km
how thick is the inner core
1400km
what consistency is the core
liquid/molten
how hot is the core
5500 Celsius
what is the core made from
iron and nickel
An important fact on the inner crust is...
there is very high pressure
why is the inner core solid
the pressure is very high
what is the earth's surface made from
plates
what causes the plates to move
plate tectonics
explain plate tectonics
the great heat of the core causes convection currents which travel through the mantle and
cause eneogh energy for the plates to move.
remember to lean the images on page 26-27
OK
Volcanoes help form the atmosphere, oceans, lakes and rivers (T/F)
True
where do volcanoes most often occur
active fault lines
where are faults found
in the gaps between plates
do volcanoes occur on the same places (T/F)
True
what are dormant volcanoes
They are "resting". they have erupted in the past, but are currently still. They can errupt
again
learn pg 29
OK
who invented wizam!
Ben and Steven
learn pg 30-31
OK
learn page 32
OK
what causes earthquakes
friction and the release of pressure
what is a tremor
a mild earthquake that does little or no damage
earthquakes cause damage to:
buildings, roads and bridges
what is an aftershock
a minor shock after the main quake
what is an aftershock
a minor shock after the main quake
After the actual earthquake _ and _ often kill thousands of people
rockfalls and sinkholes
from page 34-48 I must learn "hardcopy"
OK