Hypothesis, Theory, and Law in Science
Explore the fundamental concepts of hypothesis, theory, and law in scientific inquiry with this Grade 8 science worksheet.
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Hypothesis, Theory, and Law in Science
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Read each question carefully and answer to the best of your ability. This worksheet will test your understanding of hypotheses, theories, and laws in science.
Use the words below to complete the sentences.
1. A scientific is a testable explanation for an observation.
2. A scientific is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment.
3. A scientific describes an observed phenomenon but does not explain why it exists or what causes it.
4. The first step in the scientific method is often making an .
Indicate whether each statement is true or false.
1. A hypothesis can become a theory if enough evidence supports it.
True
False
2. Scientific laws often explain 'how' something happens, while theories explain 'why' something happens.
True
False
3. A scientific theory is just a guess and has little evidence to support it.
True
False
Choose the best answer for each question.
1. Which of the following is an example of a scientific law?
The Big Bang Theory
Newton's Law of Universal Gravitation
The Theory of Evolution
The hypothesis that plants grow taller with more sunlight
2. What is the primary difference between a scientific theory and a scientific law?
A theory is proven, while a law is not.
A law explains 'how', while a theory explains 'why'.
A theory is a guess, while a law is a fact.
There is no difference; they are interchangeable terms.
1. In your own words, explain the role of a hypothesis in the scientific method.
2. Provide an example of a scientific theory and briefly describe what it explains.
3. Why is it important for scientific theories and laws to be supported by evidence?