Experimental Design

The variable that is changed in an experiment.

• dependent

• independent

• control

• constant

The variable on the x- axis of a graph

• dependent

• independent

• control

• constant

Tags

NGSS.MS-PS3-1

Things you keep the same in an experiment

• dependent variables

• independent variables

• controls

• constants

Sam wants to see if feeding his dog MaxPro will make it swim faster than the regular dog food. What is the dependent variable?

• MaxPro

• Sam

• Swimming speed

• There is not enough information given

Erin is testing to see how different amounts of nitrogen infused in the soil will impact the height of her corn plants. She puts two corn plants into two pots. One is filled with nitrogen infused soil and the other is not. She puts the regular soil pot outside and the nitrogen infused plant in her bathroom. The corn in the regular soil grows to 7 feet tall and the corn in the nitrogen soil grows to 2 feet tall.

What is her independent variable?

• Regular soil

• Nitrogen infused soil

• How tall the plants grow

• The plant in the bathroom

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Erin is testing to see how different amounts of nitrogen infused in the soil will impact the height of her corn plants. She puts two corn plants into two pots. One is filled with nitrogen infused soil and the other is not. She puts the regular soil pot outside and the nitrogen infused plant in her bathroom. The corn in the regular soil grows to 7 feet tall and the corn in the nitrogen soil grows to 2 feet tall.

What is the dependent variable?

• The regular soil

• The nitrogen infused soil

• The height of the plants

• The plant in the bathroom

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Erin is testing to see how different amounts of nitrogen infused in the soil will impact the height of her corn plants. She puts two corn plants into two pots. One is filled with nitrogen infused soil and the other is not. She puts the regular soil pot outside and the nitrogen infused plant in her bathroom. The corn in the regular soil grows to 7 feet tall and the corn in the nitrogen soil grows to 2 feet tall.

Which part of the experiment did she mess up on?

• She does not have a control group

• She does not wait long enough for growth

• She does not keep everything constant

• She should know that nitrogen hurts plants

Tags

NGSS.MS-LS1-5

This is the variable that is measured in an experiment.

• dependent

• independent

• control

• constant

This is used for comparison in an experiment

• independent variable

• dependent variable

• constant

• control

This variable goes on the y-axis on a graph

• independent

• dependent

• constant

• control

Tags

NGSS.MS-PS3-1