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ScienceVoc.

Science Units 1,2,&3

QuestionAnswer
wetlands water ecosystems that include saltwater marshers, mangrove, swamps, and mud flats.
conserving the saving or protecting of resources.
recycle to recover a resource from an item and use the recovered resource to make a new item.
reduce to cut down on the use of resources
reuse to use items again; sometimes for a different purpose.
exotic an imported or non-native organism.
endangered a population of organisms that is likely to become extinct if steps are not taken to save it. (50 or less are left)
extinct There is no more of a particular population of animal.
threatened a population of organisms that are likely to become endangered if they are not protected.
omnivore An organism that eats borth meat & producers
erosion the process of moving sediment from one place to another.
herbivore An organism that eats only producers.
mass movement this type of pressure brings clear, fair, weather and cooler temperatures.
weathering the process of breaking rock into soil, sand, and other tiny pieces.
pollution waste products that damage an ecosystem.
acid rain precipitation resulting from pollution condensing into clouds and falling to Earth.
conserving the saving or protecting of resources.
recycle to recover a resource from an item and use the recovered resource to make a new item.
reduce to cut down on the use of resources
reuse to use items again; sometimes for a different purpose.
warm front a mountain formed by lava and ash.
slope how steep a grade or slant there is on a hill.
transpiration this is water vapor given off by animals when they exhale and plants through their leaves.
mouth is located where a river empties into an ocean.
valley a low place between two mountains
plains layered flat clouds that are low to the ground producing light rain or snow.
exotic an imported or non-native organism.
endangered a population of organisms that is likely to become extinct if steps are not taken to save it. (50 or less are left)
extinct There is no more of a particular population of animal.
threatened a population of organisms that are likely to become endangered if they are not protected.
biome a large scale ecosystem
climate zone a region throughout which yearly patterns of temperature, rainfall, and amount of sunlight are similar.
estuary the place where a freshwater river empties into an ocean.
food chain the ways in which the organisms in an ecosystem interact with one anohter according to what they eat.
food web show the interactions among many different food chains in a single ecosystem.
instinct a behavior that an organism inherits.
learned behavior a behavior an animal learns from its parents
competition the contest among organisms for the limited resources of an ecosystem.
symbiosis a long-term relationship between differnt kinds of organisms.
niche the role each population has in its habitat.
population all the individuals of the same kind living in the same environment.
producer an organism that makes its own food or plants.
consumer an organism in a community that must eat to get the energy that it needs.
energy pyramid show the amount of energy available to pass from one level of a food chain to the next.
condensation The process by which a gas changes back into a liquid.
precipitation Any form of water that falls from the clouds, such as rain or snow.
Evaporation The process by which a liquid changes into a gas.
transpiration the process in which plants give off water through their stomata.
water cycle the cycle in which Earth's water moves through the environment.
individual a single oranism in an environment
habitat a place in an ecosystem where a population lives.
ecosystem a community and its physical environment.
decomposer a consumer that breaks down the tissues of dead organisms.
community all the populations of organisms living together in an environment.
humidity a measure of the amount of water in the air.
local winds winds dependent upon local changes in temperature.
prevailing winds the global winds that blow constantly from the same directions. (Sometimes called "westerlies")
microclimate the climate of a very small area
greenhouse effect process by which the Earth's atmosphere absorbs heat.
global warming the hypothesized rise in Earth's average temperature from excess carbon dioxide.
el nino A short-term climate change that occurs every two to ten years in the Pacific Ocean.
Climate The average of all weather conditions through all seasons over a period of time.
barometer an instrument that measures air pressure.
hygrometer an instrument that measures the amount of humidity or water in the air.
wind vane an instrument that measures wind direction.
anemometer an instrument that measures wind speed.
rain gauge an instrument that measures the amount of precipitation that falls from the sky.
cirrus clouds thin and whispy clouds that are found high in the sky and are made of ice crystals and indicate fair weather.
cummulus clouds looks like a cotton ball and usually means fair weather, but small amounts of rain may also occur.
cumnulonimbus clouds tall, puffy, grayish looking clouds that indicate that stormy weather.
stratus clouds flat, layered clouds that are found low in the sky, indicate precipitation, and they sometimes make it hard to see while driving.
natural resource any of the useful minerals and other materials that people take from the Earth.
nonrenewable resource a resource that cannot be readilyl replaced once it is used.
renewable resource A resource that is replaced as it is used.
reusable resource A natural resource that is renewed by natural cycles and can be used more than once.
recycling the process of taking a resource from a product and making it into a new product.
reuse to use a resource or material again.
reduce to use less of a resource or material.
air pressure the weight of air.
atmosphere the layer of air that surrounds the Earth.
mutualism a relationship between two organisms in which both organisms benefit.
gravitation the force that pulls all objects in the universe toward one another.
magnetism The force of pushing or pulling between poles of magnets.
balanced forces The forces acting on an object that are equal in size na dopposite in direction, canceling each other out.
net force the result of two or more forces acting together on an object.
unbalanced forces forces that are not equal.
machine something that makes work seem easier by changing hte size or the direction of the force.
force a push or a pull that causes an object to move, stop, or change direction.
friction a force that opposes, or acts against, motion when two surfaces rub against each other.
velocity an object's speed in a particular direction.
intertia The property of matter that keeps an object moving in a straight line or keeps it at rest.
power the amount of work to be done for each unit of time.
work the use of a force to move an object through a distance.
acceleration a change in motion caused by unbalanced forces or a change in velocity.
momentum a measure of how hard it is to slow down or stop an object.
postition an objects place, or location.
speed a measure of the distance an object moves in a given amount of time.
energy transfer when energy is transferred from one object to another.
conduction when energy is transferred from one object to another by contact.
convection current the transfer of heat by the mass movement of heated particles into an area of cooler fluid.
radiation when energy is transferred from one object to another through rays not contact.
density the thickness of an object.
contract when an object gets smaller.
expand when an object gets larger.
uneven heating when heat is distributed at different rates and in different areas.
Created by: rsanders
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