Experimental Design Practice IEES

The type of variable that you change or manipulate in an experiment.  It is what you are testing.

• Independent
• Dependent
• Control

Tags

NGSS.MS-PS3-4

The type of variable that responds to the experiment and is what you measure to determine if your hypothesis is true.

• Independent
• Dependent
• Control

The parts of the experiment that must be kept the same.

• Constants
• independent
• Dependent

Nyla and Zuri are conducting an experiment to see how light affects plant growth. How many variables should they change in their experiment?

• none

• only 1

• 2 or more

• depends on the type of experiment

Mekhi set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

• distance traveled by the ball

• height of the ramp

• mass of the ball

• ball type

Zuri set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the independent variable?

• distance traveled by the ball

• height of the ramp

• mass of the ball

• ball type

When experimenting with the growth of a plant, Kimberly uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent

• Independent

• Control

• Compound

What are all the things that are kept the same in an experiment?

• controls
• data
• constants
• independent variables

What is the effect of salt water on the average of the height of the 3 tallest blades of grass?
What is the independent variable in the above question?

• salt water
• height
• average
• effect

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

What is an if....then statement that predicts the outcome of an experiment or how the Independent variable effects the dependent variable?

• Conclusion
• Materials
• Hypothesis
• Problem

Tags

NGSS.MS-PS2-2