Identifying Variables

What is an independent variable?

• What a scientist changes in an experiment to test their hypothesis

• What scientist measure to see if it responded to a change

• What happens when you do an experiment

• What you keep the same throughout all experimental groups

At what temperature did bread mold the slowest?

• 20

• 40

• 60

• 80

Tags

NGSS.MS-LS1-5

NGSS.MS-PS1-4

The parts of the experiment that must be kept the same.

• Constants
• Independent variable

• Dependent variable

• Conclusion

Thomas tests different types of liquids to see which will grow his plants the most. He has water, soda, milk, and no liquid at all. What is the control group?

• the one with water

• the one with soda

• the one with milk

• the one with no liquid

Dory set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

• distance traveled by the ball
• height of the ramp
• mass of the ball
• ball type

Tags

NGSS.MS-PS2-2

A scientist hypothesizes that the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is

• the male alligators
• the incubator
• the gender of the alligator
• the temperature

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

Jeff is 6 feet 2 inches is a ___________ assesment

• Qualitative
• Quantitative

The cake has a sweet smell is a _______ assessment. 

• Qualitative
• Quantitative

Tags

NGSS.MS-LS1-8

Students were involved in an experiment to investigate whether playing music while they took a test affected their scores. What would their test scores be?

• Independent variable
• Dependent variable
• Controlled variable
• Hypothesis

In this experiment the independent variable would be:

• The egg.

• The volume of water.

• The amount of salt.

• The float level.