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Earth Science
WGU ISC4 - Ecosystems, Solar System, Landforms
36
Science
Undergraduate 2
09/11/2009

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Term
Population
Definition
all members of one species in any given area
Term
Community
Definition
the interaction of different species in a given area
Term
Ecosystem
Definition
plus abiotic factors (temperature, humidity, light, etc)
Term
Biomes
Definition
major ecosystems classified according to prevalent vegetation (rainforest, savannah, etc)
Term
Biosphere
Definition
the sum of the planet’s communities and ecosystems
Term
MERCURY
Definition
CAN ONLY BE SEEN AT SUNSET AND SUNRISE BECAUSE OF PROXIMITY TO THE SUN
NO MOON
TERRESTRIAL PLANET
INNER PLANET
Term
VENUS
Definition
HOTTEST
ALMOST SAME SIZE AND MASS AS EARTH
ROTATES IN OPPOSITE DIRECTION OF OTHER PLANETS
NO MOON
Term
MARS
Definition
RED PLANET
DRY, ROCKY, IMPACT CRATERS, FROZEN GROUND
2 MOONS
½ THE SIZE OF EARTH
Term
JUPITER
Definition
MAINLY GAS
LARGEST PLANET
16 NAMED MOONS
NO SEASONS BECAUSE OF LITTLE OR NO TILT IN AXIS
Term
SATURN
Definition
RINGS CONSIST OF ROCK AND ICE
FLATTENED SHAPE
18 NAMED MOONS
ONE OF THE GAS GIANTS
Term
URANUS
Definition
LAYS ON ITS SIDE AND ROLLS AROUND THE SUN
BLUE
EXTREME SEASONS
FROZEN WITH MOLTEN CORE
Term
NEPTUNE
Definition
GASEOUS
FRIGID
BLUE
SEASONS LAST 40 YEARS
2 MOONS
Term
PLUTO
Definition
OVAL SHAPE
1 MOON
MAY BE NEPTUNE’S MOON INSTEAD OF PLANET
SOMETIMES CLOSER TO SUN MAKING IT THE 8TH PLANET
Term
Waves
Definition
DISTRIBUTE OCEAN WATER, SAND MIGRATION, SEA CLIFFS, DEPOSITIONAL AND EROSIONAL LANDFORMS
Term
Water
Definition
MAKE LANDFORMS RIVERS, SINK HOLES, GLACIERS, DELTAS, CAVERNS, PLATEAUS., HEADWARD EROSION. GLACIERS, MORAINES
Term
Wind
Definition
SHAPE LANDFORMS, SAND DUNES
Term
Weathering
Definition
the process of the breaking down of rocks, soils and their minerals through natural, chemical, and biological processes
Term
Erosion
Definition
the movement of solids (soil, mud, rock, and other particles) by the agents of wind, water, ice, movement in response to gravity, or living organisms
Term
Plate Tectonics
Definition
The model of the earth in which the rigid outer layer of the earth is fractured into separate pieces that move relative to one another carried by convection currents originating in the mantle and driven by heat release by radioactivity. The plates move on a partially molten layer underneath the plates and may push against one another, move away from one another, or slide past one another. The model unifies the ideas of continental drift and seafloor spreading.
Term
Weather
Definition
the moment-by-moment and place-by-place description of the state of the atmosphere, with events taking place on a small scale in both space and time. Weather pertains to occurrences from hour to hour, or day to day, in a specific location
Term
Climate
Definition
encompasses the totality of weather effects, accumulated over an extended period of time
Term
Cape
Definition
a pointed piece of land that sticks out into a sea, ocean, lake, or river
Term
Cave
Definition
large hole in the ground or in the side of a hill or mountain
Term
Channel
Definition
- body of water that connects two larger bodies of water (like the English Channel). A channel is also a part of a river or harbor that is deep enough to let ships sail through.
Term
Cove
Definition
small, horseshoe shaped body of water along the coast; the water is surrounded by land formed of soft rock
Term
Archipelago
Definition
group or chain of islands clustered together in a sea or ocean
Term
Atoll
Definition
(or partial ring) of coral that forms an island in an ocean or sea
Term
Bay
Definition
bay is a body of water that is partly enclosed by land (and is usually smaller than a gulf)
Term
Butte
Definition
butte is a flat-topped rock or hill formation with steep sides
Term
Isthmus
Definition
narrow strip of land connecting two larger landmasses. An isthmus has water on two sides (on the way to Tybee)
Term
Strait
Definition
narrow body of water that connects two larger bodies of water
Term
Tributary
Definition
a stream or river that flows into a larger river
Term
Wetland
Definition
an area of land that is often wet; the soil in wetlands are often low in oxygen. Wetland plants are adapted to life in wet soil. There are many types of wetlands, including: swamp, bog, marsh, etc
Term
Caldera
Definition
Crater left by a volcano
Term
Estuary
Definition
wide opening of a river meeting the sea
Term
Moraine
Definition
accumulation of roc carried by boulders; layer of glacial till
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