Types of Variables

A factor or condition that is kept the same is called the ______.

• independent variable

• controlled variable

• dependent variable

• constant variable

A factor or condition that is tested or measured to determine result is called ______.

• constant variable

• dependent variable

• controlled variable

• independent variable

The independent variable is the ONE thing you _____.

• add up

• change

• keep the same

• measure

What is the independent variable in this experiment?

"Which type of medium (soil or sand) is best for plant growth?"

• amount of medium (soil or sand)

• type of medium (soil or sand)

• height of medium (cm)

• types of plant

Dr. Sanchez sets up an experiment 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, what is the dependent variable?

• The type of music

• The amount of soil

• The type of liquid (water, apple juice, and milk)

• The plant growth

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• height from which the ball is dropped

• force acting on the ball

• height that the ball bounces

• diameter of the ball

Karina wanted to find out if cushion brush or the curved brush were better for brushing her hair. What is the independent variable in this situation?

• What Karina used to brush her hair.

• How well her hair was brushed.

• How often Karina brushes her hair.

• The shampoo she uses.

What is the independent variable in this experiment?

"Which type of metal (iron, copper and aluminum) conducts heat faster?" 

• The time each metal takes to heat up.

• The shape of the three metals.

• The size of the three metals.

• The types of metal.

Instruction: Identify the independent variable, dependent variable, and the predicted outcome from the given question below.

Scientific Question:

Does eating greasy food causes pimples.

If I __________, then the number of my _______ will ________.