7th Grade Physical Science Final Review

What is the correct order of the typical scientific method steps?

• Observation, Hypothesis, Experiment, Conclusion, Analysis

• Hypothesis, Observation, Experiment, Analysis, Conclusion

• Observation, Hypothesis, Experiment, Analysis, Conclusion

• Hypothesis, Experiment, Observation, Conclusion, Analysis

Why is it important to test a hypothesis?

• To prove the hypothesis is correct.

• To gather evidence that may support or refute the hypothesis.

• To make the experiment take longer.

• To confuse other scientists.

Tags

NGSS.MS-LS1-5

A constant variable in an experiment is:

• The variable that is changed by the scientist.

• The variable that is measured by the scientist.

• A variable that stays the same throughout the experiment.

• The group that does not receive the experimental treatment.

The independent variable in an experiment is:

• The variable that is changed by the scientist.

• The variable that is measured by the scientist.

• A variable that stays the same throughout the experiment.

• The group that does not receive the experimental treatment.

The dependent variable in an experiment is:

• The variable that is changed by the scientist.

• The variable that is measured by the scientist.

• A variable that stays the same throughout the experiment.

• The group that does not receive the experimental treatment.

What is the key difference between a control group and an experimental group?

• The control group receives the independent variable, while the experimental group does not.

• The experimental group receives the independent variable, while the control group does not.

• The control group is measured, but the experimental group is not.

• There is no difference between the control and experimental groups.

Tags

NGSS.MS-PS2-5

A scientific theory is best described as:

• A guess about how something works.

• A well-tested and widely accepted explanation of a natural phenomenon.

• A statement that describes what always happens under certain conditions.

• An opinion held by a scientist.

A scientific law is best described as:

• A well-tested and widely accepted explanation of a natural phenomenon.

• A guess about how something works.

• A statement that describes what always happens under certain conditions.

• An opinion held by a scientist.

Tags

NGSS.HS-PS2-1

How are scientific theories and laws different?

• Theories are always proven, while laws are just explanations.

• Laws explain why something happens, while theories describe what happens.

• Theories explain why something happens, while laws describe what happens.

• Theories are less reliable than laws.

Why is peer review important in science?

• It guarantees that a scientific study is correct.

• It helps to identify errors and ensure the quality of scientific work.

• It makes scientific papers longer and more complicated.

• It allows scientists to copy each other's work.