Nature of Science and Variables Review Questions

What should a scientist do if a hypothesis is NOT supported by data?

• Carry out further investigations.

• Stop investigating the question.

• Change the hypothesis to match the data

• Change the data to support the hypothesis

Tags

NGSS.HS-PS1-2

Which of the following statements about hypotheses is true?

• Hypotheses can never be

  changed.

• Hypotheses are always proven to be true.

• Hypotheses can be accepted or rejected

• Hypotheses can be proven true without evidence.

Tags

NGSS.MS-PS1-2

Helen is studying the growth of two different types of plants. She planted two of each type of plant in locations with different levels of sunlight: full sun, partial shade, and full shade. For five weeks, Helen records the number of new leaves on each plant.

Which of the following statements correctly describes the independent and dependent variables in Helen's experiment?

• The independent variable is the kind of plant, and the dependent variable is the amount of sunlight.

• The independent variable is the amount of sunlight, and the dependent variable is the number of new leaves.

• The independent variable is the amount of sunlight, and the dependent variable is the kind of plant.

• The independent variable is the number of new leaves, and the dependent variable is the amount of sunlight.

Tags

NGSS.MS-LS2-1

Which statement is the best argument for a hypothesis that has evidence to reinforce its claim?

• The results create the hypothesis.

• The results prove the hypothesis

• The results change the hypothesis.

• The results support the hypothesis

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-1

In a scientific discussion, what is the most rigorous support of a claim?

• spirited debate

• experimental evidence

• strong opinion

• persuasive narrative

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-1

Samuel conducts an experiment. He makes many observations and measurements and records each very carefully. At the conclusion of the experiment he discovers that the data he collected do not support his hypothesis. What should he do?

• Report his observations and conclusions honestly, clearly stating that the data do not support the hypothesis.

• Change his hypothesis to one that is supported by the data.

• Change the data so that they support his hypothesis.

• Throw all of his data and observations away and repeat the experiment

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

What is a hypothesis

• An idea in science

• A question and or prediction about a phenomenon

• An idea backed by tested factual evidence

• Data and facts from experimentation

• An experiment

A scientific idea tested by multiple scientists and supported by multiple lines of tested factual evidence is a...

• Theory

• Scientific Law

• Hypothesis

• Fact

• Data

Dilcia wants to know how drinking milk affects how tall a Monica grows. Which is the independent variable?

• Monica's growth
• drinking milk

Tags

NGSS.MS-LS1-5

Ramone wants to know: does the distance a person kicks a soccer ball effect how well they will do on their math test.  What is the dependent variable?

• How far they kick the soccer ball
• who the person is
• how well they do on the math test
• Type of soccer ball.