physical geography 6th grade

47 terms by johnmayer651 

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projections

way of showing the earth on a flat surface

map key

explains the various symbols represented on a map

legend

another word for map key

compass rose

a map symbol that points to the cardinal directions

cardinal directions

the 4 basic directions - North, South, East, West

intermediate directions

located between the cardinal directions - northeast, northwest, southeast, southwest

inset map

a smaller map that relates to the main map

political map

a tyhpe of map that shows how people have divided up places on the earth into countries, states, cities, and other units in order to govern them

physical map

a type of map that shows what the surface of the earth looks like

contour map

a type of map that shows the relief or changes in elevation over a given area

special purpose maps

thematic maps that show specific kinds of information on many different topids or themes

number of layers of the earth

3

core

center layer of the earth

mantle

the middle layer of the earth

crust

the outer layer of the earth - very thin

plate tectonics

theory that the earths crust consists of plates that are huge slabs of rock that move

faults

where two plates meet, their movement alongside one another causes these cracks in the earths crust

pangaea

a controversial theory that the earths continents were once joined together into a super-continent and tectonic activity caused them to move apart

weathering

natural process that breaks up surface material into smaller pieces

erosion

the process of wearing away or moving weathered material on the earths surface

causes of erosion

water, ice, wind

How much of the earths surface is covered in water

70%

How much water is fresh

2%

water vapor

water in the form of a gas

humidity

the amount of water vapor in the air

what type of air holds more humidity

warm

weather

unpredictable changes in the air over a short period of time

climate

usual, predictable pattern of weather in an area over a long period of time

what is the major factor in climate of a region

the angle of the suns rays

Tropic of Cancer

23.5 degrees N

Tropic of Capicorn

23.5 degrees S

what other major factors affect climate

wind currents, ocean currents, people

earthquake

violent and sudden movement of the earths crust usually where 2 plates meet

hurricane

fierce tropical storms with strong winds and heavy rains

typhoons

what hurricanes are called in Asia

monsoon

tremendous seasonal winds that can blow over a continent for months at a time

tornado

funnel shaped windstorms that reach extremely high speeds up to 250 mph

thunder storm

short storms including lightening, thunder, and heavy rain that develop when warm, moist air meets a cold air system

tsunami

huge sea wave caused by an earthquake on the ocean floor

the 4 parts of physical geography

atmosphere, lithosphere, hydrosphere, biosphere

atmosphere

layer of air surrounding the earth.

three effects of air pollution

global warming, ozone depletion, acid rain

lithosphere

the earths hard outer shell - land areas

topsoil

the first layer of soil that is very rich in nutrients

hydrosphere

all the earths water

biosphere

all the living things on the earth and the environments in which they live

ecosystem

a place where plants and animals are dependent upon one another and their surroundings for survival

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