Nature of science

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent
• Independent
• Control
• Constant

Tags

NGSS.MS-LS1-5

What is the general order of the steps of the scientific methods:

• question, experiment, hypothesis, analyze, results, conclusion, communicate results.
• question, hypothesis, experiment, analyze results, conclusion, communicate results
• question, hypothesis, experiment, analyze results, communicate results, conclusion
• all of the above

Tags

NGSS.HS-LS1-3

NGSS.HS-PS1-3

Justin has a bad cold. When he blows his nose mucus seems to leak through the tissue. He decides to test which tissue holds up the best when he blows his nose. What is the independent variable that Justin is testing?

• His cold

• the time of dayhe blows his nose

• the amount of tissue he uses

• the type of tissue he is using

Why should an experiment be repeated?

• to revise and refine the procedures

• to confirm the results

• to analyze the control group

• to revise the question

Tags

NGSS.MS-PS1-2

You use one or more of your five senses in making ______

• an observation

• a prediction

• an experiment

• a conclusion

The variable that is the result of the experiment is the _____

• dependent variable

• experimental group

• control variable

• independent variable

In order for an explanation to be considered scientific, it must be based on ____________.

• an inference
• a conclusion
• past experience
• evidence

Tags

NGSS.MS-LS1-5

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS3-1

NGSS.MS-LS2-4

Before a scientific theory is accepted and supported, it has

• been tested by only one scientist.

• been published in scientific journals.

• been tested many times by different scientists.

• been approved by the International Committee of Scientists.

Describes a pattern or event in nature that is always true.

• Hypothesis

• Problem

• Scientific Theory

• Scientific Law