Exercise
Form 3: Identifying Control Variables
In this engaging exercise, students will explore the concept of control variables by designing their own experiments, identifying which factors must remain constant to ensure fair testing and accurate results. Through hands-on activities and real-world applications, learners will enhance their critical thinking skills while understanding the vital role of control variables in scientific research.
Questions
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MultiChoice
When testing different fertilizers on plants, why keep the water amount constant?
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MultiChoice
What are factors in an experiment that must be kept the same throughout?
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MultiChoice
In a ramp speed experiment testing ramp height, which factor should be controlled?
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MultiChoice
Why is it important to control variables in a scientific experiment?
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MultiChoice
Testing soap brands on grease cleaning, what should remain constant?
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MultiChoice
In testing paper towel absorption, which variable must be controlled?
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MultiChoice
When testing pendulum string length, what should be kept constant?
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MultiChoice
In testing how light affects seed germination, what should be controlled?
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MultiChoice
If two variables are changed at the same time in an experiment, the results are:
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MultiChoice
Testing dissolve rates of salt in water at different temperatures, what must be controlled?
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MultiChoice
Keeping soil type, water, and sunlight identical across pots means these are:
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MultiChoice
What happens if control variables are not kept constant?