Unit 1.1 Practice Quiz: What is Science?

The main purpose of science is:

• to explain and understand the natural world

• to create works of art

• to govern societies

• to make laws for countries

Hypotheses play what role in the scientific method?

• They provide a possible explanation that can be tested.

• They are final conclusions drawn from experiments.

• They are irrelevant to scientific investigations.

• They are used only for recording data.

The What is Science? worksheet differentiates between scientific and non-scientific questions. Which of the following best illustrates this difference?

• Scientific questions can be tested and measured, while non-scientific questions cannot.

• Scientific questions are always about biology, while non-scientific questions are about chemistry.

• Non-scientific questions require experiments, while scientific questions do not.

• Scientific questions are based on opinions, while non-scientific questions are based on facts.

It is important for scientific questions to be testable because:

• they can be supported or refuted by evidence.

• they are always interesting to scientists.

• they do not require any experiments.

• they are based on opinions rather than facts.

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NGSS.MS-PS1-2

Designing an investigation to answer the scientific question, "What factors affect plant growth?", involves which of the following steps?

• Identifying variables such as light, water, and soil type to test their effects on plant growth

• Observing animal behavior in different environments

• Measuring the speed of a moving car under different conditions

• Testing the melting point of various metals

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NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

A scientist predicts the effect of light on plant growth. Which of the following is a hypothesis that could be tested through an experiment?

• If plants receive more light, then they will grow taller.

• Plants need water to survive.

• Plants are green because of chlorophyll.

• Fertilizer increases plant growth.

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NGSS.MS-LS1-5

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Fill in the blank: Scientific questions can be tested through _______ or experimentation, while non-scientific questions cannot be tested empirically.

• observation

• imagination

• guesswork

• belief

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NGSS.MS-PS2-2

Fill in the blank: A hypothesis is an educated guess or prediction that can be tested, while a theory is a well-tested explanation supported by _______.

• evidence

• opinions

• guesses

• assumptions

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NGSS.MS-LS2-4

Fill in the blank: Models are representations that help explain or predict scientific phenomena. An example could be a _______ of the water cycle.

• diagram

• recipe

• song

• equation

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NGSS.MS-ESS2-4

Fill in the blank: The scientist should keep detailed records of observations, document all procedures, and use organized recording methods to ensure _______.

• reproducibility

• popularity

• profitability

• creativity

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NGSS.HS-PS1-3