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53 Cards in this Set

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  • Back
The earth is made up of what?
A Core, Mantle, and a Crust
The middle layer is a soft layer of
molten rock
the theory that earth was once a supercontinet
Pangea
oceans cover what percentage of our planet
71% and salt water
continteal shelf is
The earths surface from the edge of the continet to the deepest part of the ocean
The ocean that has many many ridges and mountian chains
mid-atlantic ridge
a relif
the differnce in elevation of landforms lowest to highest
Tectonic Plates
circulation system of heated rocks beneaths earth crust
earth plates move 4 ways
1. spreading or moving apart
2. subduction, or diving under another plate
3. collision or crashing into another
4. sliding past another in shearing motion
When two plates meet their boundaries either
fold or faults
earthquakes occure when plates
grind past another
Volcanoes are formed when
magma gas and water pour out of an opening in the earths surface
Weathering
chemical and physical process that changes chararistics of rocks
Chemical Weathering
rocks changed into a new substance
Mechanical Weathering
process of breaking down rocks into small pieces
latitude lines
run east to west
(parallels)
lat lines are
numbered in degress north south of equator 0-90
Major lines of latitude
equator
tropic of cancer
artic circle
tropic of capricorn south
antartic circle
Longitude
runs north-south direction
(meridrans)
converge @ polar regions
Long lines numbered in
east or west of prime mederidain 0- 180
w/ time
Major lines of longitude
prime meridian splits earth in half(eastern and western hemispheres)
International Dateline 180 degress of long.
24 hour difference in time
Geography
study of distrabution and interaction of physical and human features on earth
Physical geography
prcoess of pattern in natural enviroment
Human Geography
study of people who populate and area and how they are affcetive
absoulte location
the exact place on earth where geography features found
to find absoulte location you record _____ first
latitude
hemisphere
half of the globe
relative location
how a place is realted to a surrounding enviroment
place answers
what is it like?
chararistics that describe region
phyiscal, political, economic, and cultural
formal region
limited # of chraristics
function region
organized around a set of interactions
perpetual region
which people perceve simalar
linear distance
how far across the earth persons ideas travel
time distance
amount of time it takes a person
physcoligical distance
distance people view it
archipelago
large group of islands
bay
a small body of water that extends into the land
gulf
a large body of salt water that is partly enclosed by land
Island
a piece of land surrounded by water
isthmus
a narrow strip of land that connects to larger land areas
lagoon
a shallow body of water that is partly cut off from the sea
lake
an inland body of fresh or salt water
Mountian
a high area of liand w/ steep sides anda sharp peak
Peninsula
a landform borderd by the water on three sides
Plateau
a flat area of land that is hgiher than the land around it
River
a long body of water that flows accross land higher elevation to a lower elevation
Sea
a body of salt water that is partly enclosed by land
Strait
a narrow body of water that connects 2 bodies of water
Tributary
a stream or river that feeds a lake or a larger stream or river
Valley
a area of low land between mountains and hills
equinox
where all the days and nights are equal length
solstice
summer longest day
winter- shortest day