Formulating Hypotheses
A Grade 8 science worksheet focusing on understanding, identifying, and formulating testable hypotheses.
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Formulating Hypotheses Worksheet
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Read each question carefully and provide your answer in the space provided. This worksheet will test your understanding of what a scientific hypothesis is and how to formulate one.
What is a Hypothesis?
In science, a hypothesis is a testable explanation for a phenomenon. It is an educated guess based on observations and prior knowledge. A good hypothesis is usually written in an 'If...then...because' format, proposing a relationship between variables and offering a reason for that relationship. It must be specific, measurable, achievable, relevant, and time-bound (SMART).
1. Which of the following best describes a scientific hypothesis?
A proven scientific law.
A wild guess without any basis.
A testable explanation for an observation.
A summary of experimental results.
2. What is a key characteristic of a good hypothesis?
It is always correct.
It is untestable.
It is vague and general.
It can be tested through experimentation.
3. A scientific hypothesis is an guess based on and prior knowledge.
4. A good hypothesis often follows the 'If , then , because ' format.
5. A hypothesis must be proven true for it to be considered a good scientific hypothesis.
True
False
6. A hypothesis can be a simple statement of fact.
True
False
7. Observe the illustration below. Imagine you want to investigate how plants grow. Formulate a testable hypothesis based on an observation you could make about plant growth.
8. A student observes that a plant watered with sugar water grows taller than a plant watered with plain water. Write a hypothesis for this observation in the 'If...then...because' format.
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