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Science Exam
Material for the exam
Question | Answer |
---|---|
water cycle | the process of using and reusing; it is never destroyed |
Infiltration | water is absorbed by the soil in this process |
How far water sinks into the ground depends on...(3 things): | surface vegetation, the soil texture, and the type of rock beneath the soil. |
groundwater | water in the underground part of the water cycle |
runoff | streams, lakes, and reservoirs |
evaporation | change from a liquid to water vapor |
renewal time | the time it takes to renew (or clean) itself. |
decomposers | break down the remains of dead plants and animal waste products |
carbon cycle | key element in organic molecules- the molecules of life. |
During photosynthesis plants combine what?! | carbon dioxide, water, and minerals into carbohydrates. |
nitrogen cycle | places a special role in the atmosphere, in our bodies, and as a soil nutrient. |
ecosystem | any area of nature that includes living organisms and nonliving substances interacting to produce an exchange of material between the living and non-living parts |
energy | ability to move matter around. |
mineral | any naturally occurring crystalline inorganic material. A naturally occurring substance or phase with a characteristic internal structure determined by a regular arrangement of the atoms or ions w/in it. |
ore | mineral or mineral aggregate containing precious or useful material and that occurs in such quantity, grade and chemical combination as to make extraction commercially profitable. |
alloy | metal that is a mixture of a metal(s) with a nonmetal or another metal. |