Types of Variables

A study was done to find if different tire treads affect the braking distance of a car. 
What is the independent variable (what is changed)?

• Tire tread
• Car
• Braking distance
• Duck sauce

The height of bean plants depends on the amount of water they receive.
What is the independent variable?

• Height of plants
• Condition of soil
• Salt or fresh water
• Amount of water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The higher the temperature of the air in the oven, the faster a cake will bake.
What is the independent variable?

• Time to bake a cake
• Type of cake
• Place in the oven
• Temperature of the oven

Students measured the temperature of the water at different depths in Lake Skywalker and found that the temperature varied.
What is the independent variable?

• Lake location
• Depth of the measurement
• Temperature of the water
• Measuring device

The independent variable is the ONE thing you _____.

• change
• keep the same
• experiment with
• investigate

Tags

CCSS.6.EE.C.9

The variable that you measure is the -

• IV
• DV
• Constant
• Repeated Trial

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

How many variables can be tested in a controlled experiment?

• one
• two
• three
• as many as possible

Dr. Eversole 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 independent variable?

• Type of plant

• Water, apple juice, milk

• Plant growth

Tags

NGSS.MS-LS1-5

Mr. G normally uses praise as a reward to train his dog. He wants to know the best way to train his dog, so he sets up an experiment to find out if there is a better way to get his dog to respond to commands. What is his dependent variable?

• Type of reward

• Praise

• Type of dog

• Amount of time the dog follows commands

What is the dependent variable (effect) is this experiment?

"Does eating breakfast improve test score?"

• eating breakfast or not

• the grade you got on the test

• what time you get up in the morning

• how tasty the breakfast is