Scientific Method & Variables

This part of the experiment serves as a basis of comparison:

• control group

• Independent variable

• dependent variable

• data

A possible explanation to a problem that has not yet been tested. Educated guess.

• data

• theory

• hypothesis

• fact

Tags

NGSS.MS-PS2-2

This variable in an experiment is the one being deliberately changed by the scientist.

• dependent variable

• independent variable

• data

• control group

What step does every scientific experiment begin with?

• hypothesis

• question/problem

• procedures

• conclusion

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• type of plant

• the amount of sunlight

• the type of music

• the type of liquid

Tags

NGSS.MS-LS1-5

The summary at the end of an experiment that explains the results.

• conclusion

• hypothesis

• procedure

• question

A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?

• time of day exercise occurs

• amount of exercise

• heart rate

• type of exercise

Observations made during an experiment are called:

• data

• problems

• conclusions

• questions

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?

• type of plant, amount of music, and sunlight

• plant growth

• water, apple juice, milk

Tags

NGSS.MS-LS1-5

Which is true about a hypothesis?

• It may reject or accepts your prediction.

• It summarizes the result on the experiment.

• It is the final answer to the question.

• It is an educated guess or possible answer to the question.