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8th Gr. Voc 1-14
Weeks 1-3
Question | Answer |
---|---|
scientific method | a series of steps that a scientist follows to solve a problem or answer a question |
independent variable | the variable the experiment is designed to test: the factor that the experimenter changes or manipulates |
dependent variable | the factor that responds to changes in the independent variable; the factor that is measured in an experiment in response to the independent variable |
control group | a standard set-up in which all variables are controlled and to which the experimental results are compared |
experiment | a procedure designed to test a hypothesis |
quantitative data | information or data that is expressed using numbers |
qualitative data | information or data that is described in words rather than with numbers |
hypothesis | a possible answer or tentative explanation to a scientific question |
conclusion | a statement that explains the observations or the relationship between the variables; an explanation of what the results show |
hydrosphere | the portion of Earth that contains water |
cohesion | the tendency of water molecules to form weak bonds and stick together |
adhesion | the tendency of water to stick to other substances |
polarity | uneven distribution of charges across a molecule |
surface tension | the force that acts on the particles at the surface of a liquid |