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1st9WkReview1-15
Vocabulary
| Term | Definition |
|---|---|
| Hypothesis | prediction or statement that can be tested & may be formed by prior knowledge, any previous observations, & new information |
| Experimental Research Design | used to answer scientific questions by testing a hypothesis through the use os a series of carefully controlled steps |
| Descriptive research | answers scientific questions through observation |
| Independent variable | variable that can be changed during an experiment |
| Dependent variable | factor that is being measured during an experiment |
| Constant | variable that stays the same during an experiment |
| Control | sample that is treated like other experimental groups except that the independent variable is not applied to it |
| Evaporation | process that takes place when a liquid changes to a gas |
| Condensation | process that takes place when a gas changes to a liquid |
| Water Cycle | model describing how water moves from Earth's surface to the atmosphere and back to the surface again through evaporation, condensation, & precipitation |
| Nitrogen Cycle | model describing how nitrogen moves from the atmosphere to the soil, to living organisms, & then back to the atmosphere |
| Carbon Cycle | model describing how carbon molecules move between the living and nonliving world |
| Element | substance that cannot be broken down into simpler substances |
| Electron | negatively-charged particle that exists in an electron cloud formation around an atom's nucleus |
| Proton | positively-charged particle in the nucleus of an atom |
Created by:
mgrant
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