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| Hypothesis: Trees sprout leaves in the spring when they get at least 12 hours of daylight | |||||||
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| Once you have decided on a question you want to answer, you need to come up with a hypothesis. A hypothesis is an idea that can be tested by an experiment or an observation. Here's an example of how you might come up with a hypothesis | |||||||
| You know that the trees in your neighborhood sprout new leaves every spring. You ask yourself, "What makes trees sprout leaves in the spring?" Based on your experience, you think of two changes that occur in the spring. Days become longer in the spring, and temperatures become warmer. You decide to investigate "days become longer." Then you write a hypothesis that you can test. | |||||||
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| Your hypothesis is testable. You can shine light on different indoor trees for different amounts of time and see which tree sprouted leaves first. | |||||||
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