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# Unit 1 Vocab

### Important vocabulary to know from Unit 1.

TermDefinition
Independent variable The effect of this factor is tested in an experiment.
Dependent variable We measure how this factor responds to changes made in an experiment.
Controlled variables (constants) These factors in an experiment are made to stay the same trial after trial.
Best fit line It represents the average of the data on a graph.
Speed The distance an object covers for every unit of time
Time interval A way to think of time that indicates "how much time"
Experiment A way to test an idea.
Prediction A statement that makes a specific guess about what the result of an experiment will be.
Data The observations, in the form of words or numbers, pulled from an experiment.
Conclusion The final say about the results of an experiment, it states whether the hypothesis can be supported.
Measurement A determination of amount of something.
Distance The amount of space between two points.
Metric System A system of measuring that includes units such as meters, milliliters, grams, and kilograms.
English system A system of measuring that includes units such as pounds, ounces, cups, gallons, and feet.
Kilo- In the metric system, a prefix that means 1000 times larger the base unit.
Milli- In the metric system, a prefix that stands for 1000 times smaller than the base unit.
Centi- In the metric system, a prefix that stands for 100 times smaller than the base unit.
Base unit In the metric system, it is what prefixes are attached to. Examples are meter, liter, and gram.
meter The base unit in the metric system for length.
liter The base unit in the metric system for volume.
gram The base unit in the metric system for mass.
Clock reading A way to think of time that indicates "what time it is"
Reaction time The time it takes a person to respond to sensing (see/feel/hear/smell/taste) something.
Accuracy How close a measurement is to the true, accepted value.
Precision Describes how close together repeated measurements or events are to each other.
Variable Any factor that could effect an experiment.
Position The location of an object, measured in units of length.
Trial One round of running an experiment.
Created by: davenportscience

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