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21 Cards in this Set
- Front
- Back
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What are 3 ways to prevent bias? |
Sampling-random sampling
Blind study- you do know which item you are testing Repetition- repeat the experiment many times to see if the result is the same |
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What are some science tools?
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magnifying lens,
dissecting tools- scalpels,scissors pipette/eye dropper thermometer graduated cylinder, triple-beam balance |
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What is a scientific law?
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A description of a pattern or an event in nature that is always true.
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What is a scientific theory?
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An explanation of observations or events based on knowledge gained from many observations and investigations.
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What are the scientific method steps in order?
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State the problem- ask a question
Hypothesize Test Hypothesis Analyze Data Draw Conclusions Communicate results |
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What is a constant?
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A factor in an experiment that remains the same.
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What is a variable?
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Any factor in an experiment that can have more than one value.
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What is a dependent variable?
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The factor measured or observed during an experiment.
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What is an independent variable? |
The factor in a controlled investigation that is changed by the investigator.
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What is precision?
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A description of how similar measurements are to one another.
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What is accuracy?
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A description of how close a measurement is to an accepted value.
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What is an observation?
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Using one or more of your senses to gather information and take note of what occurs.
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What is a prediction?
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A statement about what will happen next in a sequence of events.
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What is an inference?
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A logical explanation of an observation that is drawn from prior knowledge or experience.
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What is an explanation?
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An interpretation of observations.
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What is an SI unit for length?
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meter or centimeter
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What is an SI unit for mass?
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gram or kilogram |
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What is a control group?
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The group in a controlled experiment that does not have the independent variable changed. |
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What is an experimental group?
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The group in a controlled experiment used to study relationships among variables. |
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What is a control group?
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The group in a controlled experiment that does not have the independent variable changed.
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What are significant digits?
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Each number in a measurement that is known with a certain degree of reliability. |
