Variables and Groups Review

Which of the following is the label for the independent variable.

• Money Collected

• Boxes Sold

• Raising Money

• None of the above

Tags

NGSS.MS-PS3-1

• the independent variable is distance

• the dependent variable is time

• the independent variable is d=25 t

• the dependent variable is distance

Tags

NGSS.MS-PS3-1

 

The one factor that a scientist changes during an experiment.

• Controlled Variable

• Independent Variable

• Dependent Variable

. 

The variable that is measured.

• Controlled Variable

• Independent Variable

• Dependent Variable

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the independent variable?

• Dropping the same way

• Amount of time it takes the helicopter to hit the floor

• Wing Length

• Dropping from the same height

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the dependent variable?

• Dropping the same way

• Amount of time it takes the helicopter to hit the floor

• Wing Length

• Dropping from the same height

Mrs. Bleach wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. What constant should be considered when doing this experiment?

• types of music

• amount of time the music was played

• using a different student for each music type

• Pulse rate of students

A group under normal conditions that is used as a baseline for comparison in an experiment

• dependent variable

• constants (controlled variables)

• experimental groups

• control groups

Which of the following terms refers to factors that remain the same in all groups?

• Constants (controlled variables)

• Control group(s)

• Dependent variables

• Independent variables

Tags

NGSS.MS-PS2-2

 

A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7. Which is the best conclusion for this experiment?

• Acid has no effect on the health of this type of plant.

• Low acidity is harmful to this type of plant.

• High acidity is helpful to this type of plant.

• High acidity is harmful to this type of plant.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4