Lesson 1 - Dependent Variables: Question Preview (ID: 26154)

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You want to measure the effect of different amounts of oxygen on the rate of yeast growth. What is the dependent variable?
a) Rate of yeast growth
b) Amount of Oxygen
c) Type of Yeast

You think that a certain part of your brain is important in memory. To test this, you will remove this part of the brain from rats and see if they remember how to get through the maze. What is the dependent variable in this experiment?
a) Remembering how to get through the maze
b) Removal of a certain part of the brain
c) Type of rat

An entomologist (bug scientist) wants to determine if temperature changes how many times a cricket chirps. What is the dependent variable?
a) Temperature
b) Number of times a cricket chirps
c) Entomologist

A florist wants to see if Product X will extend the life of cut flowers so that they last longer. What is the dependent variable?
a) Florist years of experience
b) Product X
c) Life of flowers

You want to test a new drug that supposedly prevents sneezing in people allergic to grass.
a) sneezing
b) grass
c) drug

You want to see if playing music makes plants grow taller. What is the dependent variable in this experiment?
a) Height of plant
b) Music being played
c) Building plant is in

A scientist uses 3 different sour candies to record the kids facial expressions. What would the dependent variable be?
a) Type of Candy
b) Color of Candy
c) Facial Expressions

A scientist places corn plants at different distances from the light. What would the dependent variable be of the experiment?
a) Plants
b) Light
c) Plant Growth

Carmen designs an experiment to determine how surface type affects how far a ball will roll across a variety of surfaces. What is the dependent variable?
a) the lengths of the surfaces
b) the type of ball chosen
c) how far the ball rolls

Austin wants to test how the amount of sugar in one brand of cereal affects the behavior of young children that eat that brand of cereal for breakfast.
a) the amount of cereal
b) children's behavior
c) the amount of sugar

A soap manufacturer wants to prove that their detergent works better to remove tough stains. What is the dependent variable?
a) Detergent
b) Removal of Stains
c) Machines used to make product

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