Scientific Variables

In an experiment, the constant, or control, is...

• Something that is changed.

• What you're measuring.

• Something that does not change.

• Your conclusion.

In your experiment, the factor that you measure is called the...

• independent variable

• dependent variable

• control

• ruler

Tags

NGSS.MS-PS2-2

Choose the correct definition of a constant or a control in a scientific experiment.

• The factor that is always changing.

• Something that happens a lot.

• All the factors that stay the same in an experiment.

• Stating whether your hypothesis was correct.

In this same experiment of Steve finding out which type of fertilizer would make his sunflowers grow larger, what would be the dependent variable?

• Type of fertilizer

• Size of sunflower

• Type of sunflower

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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 and gatorade. Each plant has the same amount of sunlight, soil and listens to the same music. What is the independent variable?

• the type of plant

• the type of liquid

• the type of music

• the amount of liquid

Tags

NGSS.MS-ETS1-1

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 and gatorade. Each plant has the same amount of sunlight, soil and listens to the same music. What is the control?

• The size of the plant.

• The type of liquid.

• There are no controls.

• Amount of sunlight, soil and music.

Tags

NGSS.MS-LS2-1

Does study time affect the student's score on an test?

Use the table to answer questions 11 and 12.

Suppose you collected this data from students in your school. What is the independent variable in the study?

• The Students

• The Study Time

• The Grade on the Quiz

What part of the experiment changes as a result of the independent variable? (AKA your dependent variable)

• The students

• The study time

• The grade on the quiz

True or False: An experiment may have more than one control.

• True

• False

In your experiment, the thing you measure is called the...

• independent

• dependent

• control

• ruler

Tags

NGSS.MS-PS2-2