Controlled Experiments

You can have more than one independent variable in a controlled experiment.

• True
• False

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

Tags

NGSS.MS-LS1-5

A possible explanation for why something happens is called ___.

• a variable

• an experiment

• a hypothesis

• an assumption

Tags

NGSS.MS-LS1-5

The step by step directions of the experiment are found in the:

• hypothesis
• conclusion
• procedure
• data table

Which of the following is NOT a testable question?

• How do rockets work?

• Does fertilizer help plants grow bigger?

• Does heart rate increase with exercise?

• Does the freezing point of water change at different elevations?

What is the best way to collect and record data?

• In a data table

• On post-it notes

• On scrap paper

• interpretive dance

Tags

NGSS.3-ESS2-1

After the data is analyzed the hypothesis is stated as correct or incorrect in the __________

• conclusion

• experiment

• hypothesis

• table of contents

Tags

NGSS.MS-PS2-5

What step does every scientific experiment begin with?

• hypothesis

• question/problem

• procedures

• conclusion

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

• conclusion
• procedures
• materials
• responding variable

Testing a hypothesis often involves a(n):

• answer
• experiment
• problem
• safety check

Tags

NGSS.MS-LS1-5