Scientific Method

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

• data
• theory
• hypothesis
• fact

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

• experimental group
• control group
• data
• variables

This variable in an experiment is the I choose to change as the scientific investigator.

• dependent variable

• independent variable

• data

• control group

Tags

NGSS.MS-PS2-2

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

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-ETS1-3

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

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

Observations made during an experiment are called:

• data
• problems
• conclusions
• questions

Tags

NGSS.HS-LS2-3

A series of steps used by scientists to solve a problem or answer a question. 

• scientific method
• recipe
• data collection
• metric system