94 terms

Science Exam

natural resource
something that is found in nature that is useful to humans
aquatic resource
water and all things that live in or around water....
all of the Earth's water, including surface water, ground water, and water vapor
an artificial lake used to store water
the contamination of air, water or soil by substances that are harmful to living organisms
the wise use of natural resources
dissolved oxygen
oxygen gas absorbed by and mixed into water
water pollution
an excess of natural or man-made substances in a body of water
composed of matter that comes from plants or animals either dead or alive
composed of matter that doesn't come from plants or animals either dead or alive
to decay or rot
aquatic organism
any living thing that is a part of an aquatic ecosystem
water quality
the fitness of water source for a given use such as drinking, fishing, or swimming
the gaseous envelope surrounding the Earth; the air
water cycle
the natural process of evaporation and condensation, driven by solar energy and gravity, that distributes the Earth's water as it evaporates from bodies of water
to change from a liquid shape into vapor
the part of the world in which life can exist; living organisms and their environment
the passage of water through a plant to the atmosphere
acid rain
rain or other precipitation containing a high amount of acidity
surface water
precipitation that runs off the land surface
a form of water, such as rain, snow or sleet that condenses from the atmosphere and falls to the Earth's surface
precipitation not absorbed by soil
a low-lying area where the soil is saturated with water
the solid part of the Earth consisting of the crust and the outer mantle
soaked with moisture
ground water
water that flows or collects beneath the Earth's surface in saturated soil or aquifers
an underground layer of sand, gravel, or rock that holds water in pores or crevices
recharge areas
water that soaks into and refills an aquifer
the movement of water through the water cycle
all the land from which water drains into a specific body of water
a stream that flows into a larger stream or other body of water
watershed address
the watershed, sub-watershed, and sub-sub-watershed that includes a particular location
the high ground where precipitation first collects and flows downhill in tiny trickles too small to create a permanent channel
the part of the stream where water collects to flow downstream, including the stream-bed, gravel bars and stream banks
perennial stream
a stream that flows for most of or all of the year
intermittent stream
a stream that flows again at different times of the year
point-source pollution
water pollution that comes from a single source or outlet
non-point pollution
water pollution that comes from a combination of many sources rather that a single outlet
silt, sand, or rocks and other matter carried and deposited by moving water
the wearing away of land
pertaining to physical geography
a behavior or trait that increases a specie's chance of survival in a specific environment
a respiratory organ that enables aquatic animals to take oxygen from water and to excrete carbon dioxide
a wing or paddle-like part of a fish used for propelling, steering, or balancing in the water
swim bladder
an air-filled sac near the spinal column in many fishes that helps maintain buoyancy
any of the small, stiff fat plates that form the outer body covering of most fish
stream bed
the bottom of the stream channel
lateral line
an organ running lengthwise down the sides of fish, used for detecting vibrations for pressure changes
an animal that lives by capturing and eating other animals
an animal that is eaten by a predator
microscopic free floating plant or animal like organisms
a group of individuals of the same species occupying a safe area
a group of plants and animals living and interacting with one another in a particular place
the natural environment in which organisms normally live, including the surroundings and other physical conditions needed to sustain it
the act of actively seeking after and using an environmental resource (such as food) in limited supply by two or more plants or animals
the function position, or role of a species within an ecosystem
of or having to do with life or living organisms; organic
nonliving; not derived from living organisms; inorganic
carrying capacity
an ecosystem's resource limit; the maximum number of individuals in a population that the ecosystem can support
an organism that is able to produce its own from non-living materials, and which serves as a food source for other organisms in a food chain
an organism that feeds on another organism in a food chain
an organism such as bacterium or fungus that feeds on and breaks down dead plants or animals, making essential components available to other organisms
food chain
a series of plants and animals linked by their feeding relationships
food web
many interconnected food chains within an ecological community
energy pyramid
a graphical representation designed to show the relationship between energy and trophic levels of a given ecosystem
trophic levels
a group of organisms that occupy the same position in a food chain; each step of an energy pyramid
natural selection
the natural process in which those organisms best adapted to the conditions under which they live survive and poorly adapted forms are eliminated
a community of organisms together with their physical environment and the relationships between them
aquatic ecosystems
an ecosystem organized around a body of water
a large stream
a body of flowing water
a large body of standing water
a body of standing water small enough that sunlight can reach the bottom across the entire diameter
a wetland dominated by reeds and other grass like plants
a low-lying area where the soil is saturated with water
the part of a body of water continuously moving in a different direction
oxbow lake
crescent-shaped lake formed when a bend of a stream is cut off from the main channel
to serve as a protective barrier to reduce or absorb the impact of other influences
the number and variety of living things in an environment
an area of deeper, slower moving water in a stream
an area of shallow, faster-following water in a stream
an animal without a spinal chord
stream bank
the shoulder-like sides of the stream channel from the water's edge to the higher ground nearby
riparian zone
land next to the stream, starting at the top of the bank, with heavy plant cover on either side
the flat land on both sides of a stream, into which the stream's extra water spreads during a flood
first-order stream
a small stream with no tributaries coming into it
an aquatic invertebrate that feeds by cutting and tearing organic matter
an aquatic invertebrate that feeds on fine material
an aquatic invertebrate that eats aquatic plants (algae)
fisherman, especially one fishing for pleasure
filter feeders
an aquatic animal that feeds by filtering tiny organisms or fine particles of organic matter from water that passes through it
pond succession
the natural process by which sediment and organic material gradually replace the water volume of a pond
loose material that results from natural breakdown; material in early stages of decay
ocurring or living in the absence of oxygen