Variable Worksheet

Becky wanted to figure out what type of liquid worked best for growing beans. She watered one with coca-cola, one with lemonade, and one with just water. After one week, she measured how high they had grown.

• Water

• Dependent Variable

• Growth

• Control

• Type of Liquid

• Independent Variable

Jason wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scott's Fertilizer on one, and no fertilizer on another.

• Growth

• Manipulated Variable

• Type of Fertilizer

• Measured Variable

• No Fertilizer

• Control

Shainia wanted to see if eating apples would help her do better on her classwork. The first day, she didn't eat any apples. On day 2, she ate one apple; on day 3, she ate 2 apples; and on day 4, she ate 3 apples. Each day she recorded the grades she got on her science work.

• Number of Apples

• DV

• No Apples

• Control

• Science score

• IV

Jessica wanted to see what kitchen cleaner worked best for cleaning her counters. She used Lysol, Clorox, Pinesol, and just water. For each cleaner, she put 5 milliliters of grape juice on the counter, sprayed the cleaner, and wiped it with one paper towel.

• Paper Towel

• Constant

• Cleanliness

• Control

• Cleaner

• DV

• Water

• IV

Emily wanted to see what battery lasted the longest. She put each battery into a clock and recorded the time that the clock stopped. She used Duracell, Energizer, Kroger brand, and EverReady.

• Clock

• IV

• None

• DV

• Brand

• Constant

• Time

• Control