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15 Cards in this Set
- Front
- Back
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What is a model and why do scientists use them?
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A representation of an object or system. It helps scientists communicate information that would be difficult to explain. They are also used to design complex objects, predict the weather, and study very small objects.
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What is the difference between comparing and contrasting?
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Comparing is telling what two or more things have in common. Contrasting is telling how two or more things are different from each other.
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What is a control in an experiment?
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It is a group that is treated like other experimental groups, but the independent variable is not applied.
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What is a constant in an experiment?
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It is a variable that is kept the same for all groups in an experiment.
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What is the dependent variable and where would you find it on the graph?
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The variable being observed or measured. It is graphed on the "y" axis of a graph.
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What is an independent variable and where would you locate it on a graph?
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The variable that is being changed. It can be found on the "x" axis of the graph.
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What is an observation?
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The use of your senses to gather information.
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What is science?
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The knowledge gained by observing the natural world.
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What are the 6 steps in the scientific method?
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1. Recognize a problem/Ask a question
2. Research/Make observations 3. Form a hypothesis 4. Test your hypothesis 5. Analyze data 6. Draw conclusions (7. Share information) |
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What is a trial in an experiment and why should you do more than one?
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One time through an experiment. You should repeat your experiment because it gives you more accurate results.
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What is a qualitative observation?
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An observation that uses all of your senses in order to describe what you are observing.
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What is a quantitative observation?
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An observation that is expressed in numbers. This is needed in order to make an experiment more reliable.
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What is a hypothesis?
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An idea or explanation based on prior research or observations that can be tested.
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What is an inference?
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An explanation of your observations.
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What is technology?
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The practical application of science to commerce or industry.
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