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Experiment
6th grade science 1st 6 weeks
Term | Definition |
---|---|
An Experimental Investigation | is used to test an idea by changing one factor called a variable. By changing only one variable, you can see how it affects the outcome of the experiment. |
Independent Variable | the variable that you, the experimeter can change. |
Independent Variable = | Cause |
Dependent Variable | the variable you are measuring, that may change when you change the independent variable. |
Dependent Variable = | Effect and Result |
Constants | all other variables must remain the same for the experiment to be fair. |
Experimental Investigations | require knownledge or previous experience. Sometimes you may need to research the topic before beginning the experiment. |
Hypothesis | Knowledge will be used to write a hypothesis. You should tell how you will change the independent variable and predict the effect it will have on the dependent variable. |
The three key words for Hypothesis are | If, Then and Because |
Hypothesis is a guess | Remember a hypothesis does NOT have to be right... this is your guess and you run the experiment to see if you guessed right or wrong! |
Control | is the experiment setup without changing the independent variable. |
Experimental Investigation Summary Part 1 | An experimental investigation is a fair experiment that tests only one Independent Variable (cause) and measures/records a Dependent variable (effect). |
Experimental Investigation Summary Part 2 | Before the experiment, a hypothesis is written to guess how changing the Independent Variable in a certain way will affects the Dependent Variable. |