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Hypothesis, Theory, and Law in Science

Explore the fundamental differences and relationships between hypotheses, theories, and laws in scientific inquiry for Grade 9 students.

Grade 9 Science Engineering & Science PracticesHypothesis, Theory and Law
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Multiple ChoiceFill in the BlanksTrue / FalseShort AnswerWord Bank

Standards

NGSS.HS-LS2-6NGSS.HS-ETS1-3

Topics

sciencehypothesistheorylawscientific methodgrade 9
7 sections · Free to use · Printable
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Hypothesis, Theory, and Law in Science

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Read each question carefully and provide your best answer based on your understanding of scientific hypotheses, theories, and laws.

1. Which of the following is a testable prediction that attempts to explain a phenomenon?

a

Scientific Law

b

Hypothesis

c

Scientific Theory

d

Observation

2. 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, is known as a:

a

Hypothesis

b

Scientific Law

c

Scientific Theory

d

Conjecture

3. A scientific   describes an observed phenomenon but does not explain why it occurs.

4. A   is often an educated guess that can be tested through experimentation.

5. A scientific theory can eventually become a scientific law if enough evidence is gathered.

T

True

F

False

6. Both scientific theories and laws are supported by a large body of empirical evidence.

T

True

F

False

7. Describe the key difference between a scientific theory and a scientific law. Provide an example of each.

Use the words below to complete the sentences.

Hypothesis
Theory
Law

8. The statement 'If I increase the amount of fertilizer, then the plant will grow taller' is an example of a  .

9. The explanation for why objects fall to the Earth, supported by extensive evidence, is Newton's   of Universal Gravitation.

10. The principle that energy cannot be created or destroyed, but can only change form, is an example of a scientific  .