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What is Science
?
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Variables are the things that are changed in the experiment
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3 types of variables:
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1. Independent variable is what the scientist changes. There is only 1 of these.
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2. Dependent variable The variable that might change because of what the scientist changes
– what is
being
measured
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3. Constant variable The thing(s) that are not changed in experiment
-also called control
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Ex: If I leave all the lights on all day,
then my electric bill will be expensive
Independent Variable:_______________
Dependent Variable:________________
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If I brush my cat more, then there will be less fur on my furniture
Independent Variable:_______________
Dependent Variable:_______________
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Elizabeth wanted to test if temperature affected how fast milk goes bad and curdles. She left milk in a room temperature closet, a fridge, and a oven that was turned on low heat. She then measured how rotten the milk was after 10 days.
Independent Variable:_______________
Dependent Variable:_______________
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Rachel counted the leaves on each of three plants. Then she put one plant under a blue light bulb, another plant under a yellow light bulb, and a third plant under a white light bulb. She kept all three lights on from 6:00 a.m. to 9:00 p.m. After 2 months, she counted how many leaves each plant had.
Name the independent variable, the dependent variable and 3 constant variables?