Scientific Method

A prediction that can be tested.

• data

• theory

• hypothesis

• fact

This part of the experiment serves as a basis of comparison; the variable being tested has been omitted.

• experimental group

• control group

• data

• variables

This variable in an experiment that is being deliberately tested or 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

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

The summary at the end of an experiment that explains the results and refers back to the hypothesis. 

• conclusion
• procedures
• materials
• responding variable

Testing a hypothesis often involves a(n):

• answer
• experiment
• problem
• safety check

Tags

NGSS.MS-ETS1-3

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

• heart rate

• type of exercise

• amount of exercise

• time of day exercise occurs

On what axis should the independent variable always be?

• X
• Y

Tags

NGSS.MS-PS3-1

Squidward found new reeds to try out for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. The results were put in the table.

What was the dependent variable?

• The Song

• The Reed

• The Applause