Identifying Variables

Front

What is the DEPENDENT variable (effect) in this experiment?
"Does eating breakfast improve test score?"
Options: eating breakfast or not, the grade you got on the test, what time you get up in the morning, how tasty the breakfast is

Back

the grade you got on the test

Front

What is the INDEPENDENT variable (cause) in this experiment? "Which type of medium is best for plant growth?" Options: height of plant (cm), type of medium (soil vs. sand), amount of medium, types of plant

Back

type of medium (soil vs. sand)

Front

What is the DEPENDENT variable (effect) in this experiment? "Do tall people jump further than short people?"

Back

how far the person jumps

Front

What is the INDEPENDENT variable (cause) in this experiment?
"Which type of metal, copper or aluminum, conducts heat faster?"
Options: size of metal, types of metal, time it takes to heat up, shape of the metal

Back

types of metal

Front

What is the "controlled group" in the experiment where Bonnie tests Bio-fertilizer 'x'? Options: plant sprayed with Bio-fertilizer 'x', plant without the Bio-fertilizer 'x'

Back

plant without the Bio-fertilizer 'x'

Front

Which variable is NOT a constant in this experiment? "Is Bounty paper towel more absorbent than sparkle paper towel?" Options: the size of paper towel, the amount of water for the paper towel to absorb, amount of water the paper towel absorbed, the shape of paper towel

Back

amount of water the paper towel absorbed

Front

What is the INDEPENDENT variable (cause) in this experiment?
"Will fish school more if a predator is present?"
Options: whether there is a predator or not, number of fish school together, type of predator, type of fish

Back

whether there is a predator or not

Front

Which variable is NOT a constant in this experiment? "What type of medium do earthworms prefer?" Options: type of medium, amount of medium, direction of the earthworm, types of earthworm

Back

type of medium

Front

What is the "experimental group" in an experiment testing the effect of a special study program on test scores? Options: the usual study program, special study program

Back

special study program

Front

What is the INDEPENDENT variable in Janet's experiment on coffee and productivity?

Back

Having coffee or not