Scientific Method and Variables

How many variables can be tested in a controlled experiment?

• one

• two

• three

• as many as possible

Tags

NGSS.MS-PS2-2

What step does every scientific experiment begin with?

• hypothesis

• question/problem

• procedures

• conclusion

Why do we want to test one variable at a time?

• Because it is hard to setup a data table with more

• To know what is causing the changes

• It is what has always been done

• No one really knows

Squidward found new reeds to tryout 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 independent variable?

• The Song

• The Reed

• The Applause

Which variable do you change in an experiment?

• Dependent

• Independent

Tags

NGSS.MS-PS2-2

According to the diagram, which question is being tested?

• How does the amount of water affect flowering plants growth?

• How does salt water affect flowering plant's growth?

• How does adding fertilizer to flowering plants affect growth?

• Which type of fertilizer affects plant growth to grow tallest?

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Variable that the scientist keeps CONSTANT or the SAME. 

• Control Variable

• Variable

• Dependent Variable

• Independent Variable

Tags

NGSS.MS-PS2-2

Testing a hypothesis often involves a(n):

• answer

• experiment

• problem

• safety check

Tags

NGSS.MS-PS1-2

What starts the scientific method?

• question

• hypothesis

• analysis

• conclusion

Which variable do you measure?

• Independent

• Dependent

Tags

NGSS.MS-PS2-2