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93 Cards in this Set
- Front
- Back
Define the term ecosystem |
a community of living organisms and nonliving objects that interact as a system |
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define the term niche |
the position of a population or species in an ecosystem |
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define the term predation |
the hunting and killing of an animal to benefit the predator |
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define the term predator |
a living organism that preys on other living organisms for food. |
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define the term prey |
a creature that is killed by a predator for food. |
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define the term mutualism |
a symbiotic relationship where both parties benefit |
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define the term commensalism |
a symbiotic relationship in which one party benefits, and the other party is not affected |
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define the term parasitism |
a symbiotic relationship where one party benefits, but the other one is harmed |
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define the term host |
the party that is affected negatively in the parasitic relationship |
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define the term Abiotic factors |
Factors that are not alive/Non-Living factors |
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define the term Biotic Factors |
Living creatures/Factors that are alive |
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define the term producer |
An organism that produces its own food |
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Define the term consumer |
an organism that relies on other organisms for food. |
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define the term food chain |
A linear transfer of energy from one organism to the next |
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define the term food web |
several food chains linked together |
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define the energy pyramid |
the transfer of energy from producer, to herbivore, to carnivore, and then to decomposer. each transfer has 1/10th of the energy from the previous transfer. |
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What is the main source of energy in an ecosystem? |
The Sun |
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Which organism is always on the bottom of the energy pyramid? |
producers |
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Name 4 Biotic factors, and 4 Abiotic factors of an enviroment |
biotic: grass, mouse, deer, moose, sloth, monkey, mushroom, etc... Abiotic: rock, water, dirt, sun, air, land, etc... |
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How might removing one species from a food chain affect species that eat it? |
they will compete more for food, or they will starve |
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Define the term topographic map |
a map used to detail altitude and the shape of hills and mountains. usually they are very detailed. |
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define the term elevation |
distance from sea level |
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define the term contour lines |
a line on a map joining points of equal elevation |
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define the term topography |
a detailed description of an area in a map that describes elevation and hills. |
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define the term contour intervals |
the distance from one contour line and another |
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define the term index contours |
contour line that is darker than the other lines, usually placed every 5 contour lines |
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what is a topographic map? |
a map used mainly to define a land-form and the area around it, using elevation to describe certain terrain |
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How can you determine the steepness of a slope looking at a topographic map? |
the distance between the contour intervals |
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how can you determine the direction a river is flowing on a topographic map? |
find out the contour of the land, and downhill is the direction it is flowing |
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how can you tell the difference between a hill and a depression |
the depression has a hatched design, rather than a smooth and blank one |
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what is weathering and erosion and what land features do they form? |
weathering is the breakdown of objects due to nature, and erosion is the movement of the sediment created by weathering. these create land forms such as caves, sink holes, river mouths, and hills |
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define the term axis |
the invisible line that all planets spin on |
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define the term rotation |
the spinning of a celestial body around its axis |
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define the term revolution |
the orbit of a celestial body around another celestial body |
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define the term solstace |
the time when the sun reaches its highest or lowest point from earth |
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define the term equinox |
the time when the sun is parallel with earths equator, and the day and night are the same length |
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define the term moon phase |
the way the moon looks as the sun shines on different parts of it |
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define the term new moon |
a time when no visible light reflects back to earth from the moon, and it cannot be seen |
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define the term waxing |
to grow larger |
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define the term full moon |
the time when the entire bright side of the moon can be seen from the earth, and the moon is at its biggest point |
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define the term waning |
to shrink in size |
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what causes seasons? |
the relative distance that the sun is from different hemispheres of the earth. this is due to the 23.5 degree tilt of the earth |
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why do we have moon phases? |
because the sun lights up different parts of the moon throughout its cycle, and we can only see one part of the moon |
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name all the phases of the moon |
new moon,Waxing crescent, 1st quarter, Waxing Gibbous, Full Moon, Waning Gibbous, 3rd Quarter, Waning Crescent. |
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Define the term Continental Drift |
the movement of the Tectonic Plates relative to each other. |
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Define the term Pangea |
A super continent that existed millions of years ago |
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What is seafloor spreading |
the theory that as old land is sucked back into the core, new land is spewed out into the earth through vents on the seafloor |
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Define the term plate tectonics |
the theory that states that the earths crust is made up of plates, and that they move around on the surface, colliding with one another |
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define the term plate |
the huge chunks of land that float over the mantle |
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define the term asthenosphere |
area between the mantle and the lithosphere |
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define the term convection current |
the currents in the asthenosphere that cause the plates to move |
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define the term divergent boundary |
a boundary between plates where they are moving apart |
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define the term convergent boundary |
a boundary between plates where they are colliding |
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define the term subduction zone |
the area in which old crust is sucked back into the mantle by convection currents |
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define the term transform boundary |
a boundary where plates are sliding up against one another. |
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why were Wegener's ideas about continental drift initially rejected? |
because he could not explain how new land was formed |
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what evidence did Wegener have to support his theory? |
there was coal in Antarctica, there were similar fossils in different coasts apart from each other, and there were mountain ranges that seemed to connect when you lined them up with other continents |
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how do the ages of rocks on the ocean floor support Hay Hess's theory of seafloor spreading? |
the newer rock was close to the rifts, and the oldest rock was found on the coast |
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define the term atmosphere |
the large layer of gas held down to earth by its gravity. shields the earth from radiation, and also allows life to form. |
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define the tern troposphere |
the part of the atmosphere where all life exists |
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define the term radiation |
the emission of harmful particles and rays of energy from decaying molecules |
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define the term conduction |
the transfer of heat energy by contact |
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define the term convection |
the transfer of heat energy by cooling and heating liquids and gas |
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define the Coriolis effect |
deflection of an object in reference to a rotating object |
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define the term jet stream |
thin, fast flowing currents found in our atmosphere |
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define the term sea breeze |
at night, when the land cools down before the sea does, a breeze comes from the sea to the land |
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define the term land breeze |
during the day, when the sea stays cool for longer than the land, a breeze come from the land, to the sea |
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why do some areas of earths surface get more sun that others? |
because the earth is tilted |
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define the term weather |
the state of the atmosphere at a place and time |
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define the term air mass |
how dense the air is |
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define the term of highs and lows when referring to air pressure |
when the air pressure is high, it will go to an area of low pressure. low pressure is when the air is less dense, while high pressure is the oposite |
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define the term front |
a large "cloud" of either high or low pressure, causing sudden changes in temperature and weather |
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define the term hurricane |
when a tropical storm reaches critical mass, and the wind speed exceeds 75 mph then it becomes a hurricane |
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define the term station model |
a model that shows the current weather, and temperature, as well as wind speed of an area |
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define the term isotherm |
a type of equal temperature on a given date |
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define the term isobar |
a line on a map that connects two areas with the same atmospheric pressure |
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why is fair weather common in areas of high pressure? |
because high pressure areas do not get clouds due to the wind. |
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how does a cold front form? |
when an area of low pressure hits an area of high pressure, and goes underneath it |
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what is a station model? |
it is a model used to show all the atmospheric facts about an area |
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define the term surface currents |
the currents on the surface of the ocean, that are formed by wind |
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define the term upwelling |
a process in which deep, cold water rises to the surface of the ocean |
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what is El Nino |
a complex series of atmospheric changes to the California area |
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how do winds create surface movement? |
by pushing the water in the direction of the wind |
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how does the rotation of the earth modify ocean currents in the northern hemisphere? |
it causes the eastern currents to flow slower than the western currents |
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what kind of current is the gulf stream? |
a warm ocean current |
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why are there more warm water currents |
because heat rises |
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where do warm currents originate? the cold currents? |
worm comes from the equator. cold comes from the poles |
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what side of the us is the gulf stream? the California current? is this a trend? |
east, west, and yes |
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what is a major force behind the creation of the tides? |
the moon
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how do spring and neap tides differ |
one is an increase of the tides, another one is a dull of the tides |
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what is the human impact of overfishing? |
the fish are going extinct and there is less for the predators to eat |
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what is the human impact of oil spills? |
the ocean is being poisoned and all life is killed around an oil spill |
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what are the human impacts of marine debris? |
the environment is being tainted, and creatures are being killed in the debris |