NGSS.3-5-ETS1-3

When conducting an experiment, in order to get reliable results, it is important to:

• Disregard results that do not match your hypothesis
• Test many different variables at the same time
• Test all forces at the same time
• Repeat the investigation several times

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NGSS.3-5-ETS1-3

A prototype is a model that

• functions like the final solution would
• is made of the same materials as the final product
• is made after the final product is made

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NGSS.3-5-ETS1-3

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 ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid

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NGSS.3-5-ETS1-3

What are the three kinds of variables that you need to identify in your experiments?

• independent, controlled, dependent
• independent, dependent, identical
• identical, controlled, sample

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NGSS.3-5-ETS1-3

How many variables should a scientist change with each new experiment?

• 1
• 2
• 3 or more
• as many as he wants to

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NGSS.3-5-ETS1-3

Which brand of battery last the longest?

• Testable

• Not testable

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NGSS.3-5-ETS1-3

Sadie is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair. Mark all that apply.

• She used different types of seeds/plants.

• The plants are in different pots.

• She did not plant very many plants.

• Seed age might not make a difference.

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NGSS.3-5-ETS1-3

The _______________ during an experiment is what changes or is different.

• hypothesis

• conclusion

• variable

• conclusion

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NGSS.3-5-ETS1-3

The _______________ during an experiment is what changes or is different.

• hypothesis

• conclusion

• variable

• conclusion

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NGSS.3-5-ETS1-3

These are the variables that should stay the same. They do not get any changes in order to make for a fair test.

• Dependent Variables

• Controlled variables

• Independent Variables

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NGSS.3-5-ETS1-3