In order to test something, you will use tools to measure, count, observe.
You will have something that you change
You will have something that you keep the same.
Meaurement Tools
Time: Stopwatch
Length, width, height: Ruler
Weight: Scale
Strength: Amount of Force until failure (add weights)
Volume of a liquid: Measuring Cups
Light:
Pressure:
Heat:
Number: Counting
Variables To Change
How does the type of light affect how quickly a plant will grow?
Does the type of liquid given to a plant affect its growth?
How does the type of wood affect how long it burns?
How does the amount of light affect the rate of seed germination?
Do mint leaves repel ants, worms, or isopods?
What is the effect of increased or decreased oxygen on plant growth?
Does the direction seeds are planted affect plant growth?
Control Variable
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Are you interested in buildings & structures?
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Are you interested in machines?
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Are you interested in electricity?
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Are you interested in liquids?
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Are you interested in light?
Examples of Testable Questions
How does the amount of sunlight (for a given length of time) affect the color of construction paper?
Are you interested in computers?
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Are you interested in environmentalism?
Examples of Testable Questions
What type of soil filters polluted water the best?
What is the effect of a magnetic field on plant growth?
Are you interested in food and baking?
Examples of Testable Questions
What type of soil filters polluted water the best?
What is the effect of a magnetic field on plant growth?
Are you interested in magnets?
Examples of Testable Questions
What type of soil filters polluted water the best?
What is the effect of a magnetic field on plant growth?
4. Write down several questions in your notebook.
5. Pick the question that you are most interested in.
Science Fair Ideas 