What Are Science Variables

What you measure or observe in an experiment.

• constant variable

• controlled variable

• dependent variable

• independent variable

Tags

NGSS.MS-PS2-2

The ONE thing you change in an experiment.

• constant variable

• controlled variable

• dependent variable

• independent variable

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

All the things that have to stay the same in an experiment (except for the one thing you change).

• constant variable

• controlled variable

• dependent variable

• independent variable

Justin wants to determine the effect of fertilizer on the growth of grass. What is the independent variable?

• amount of fertilizer

• height of grass

• type of plant

• time

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Justin wants to determine the effect of fertilizer on the growth of grass. What is the dependent variable?

• amount of fertilizer

• height of grass

• type of plant

• time

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Randell wants to determine if salt in the water has an effect on his goldfish. What is the independent variable?

• how much salt is in the water

• temperature

• health of his goldfish

• amount of algae in the tank

Tags

NGSS.MS-LS1-5

Randell wants to determine if salt in the water has an effect on his goldfish. What is the dependent variable?

• how much salt is in the water

• temperature

• health of his goldfish

• amount of algae in the tank

Tags

NGSS.MS-LS1-5

Julie wants to know the effect of studying 10 minutes extra each day on her Math. What is the independent variable?

• time

• studying 10 extra minutes

• her math grade

Julie wants to know the effect of studying 10 minutes extra each day on her Math. What is the dependent variable?

• time

• studying 10 extra minutes

• her math grade

Joe wants to determine the effect of pesticides on the size of apples in the orchard. What is the independent variable?

• amount of bugs

• size of apples

• use of pesticides

• number of apples