Unit 8 - Scientific Method (variables)

QuizÂ by Kate Downey

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28 questions
• Q1
You construct the four graphs shown above to show the rate at which four different disease-producing bacteria grow. Which bacterium would produce a disease in the shortest amount of time?
Bacterium 2
Bacterium 4
Bacterium 3
Bacterium 1
60s
• Q2
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?
remembering how to get through the maze
removal of certain part of brain
60s
• Q3
You want to see if playing music makes plants grow taller. What is the dependent variable in this experiment?
height of plant
music being played
60s
• Q4
A soap manufacturer wants to prove that their detergent works better to remove tough stains. What is the dependent variable?
detergent
removal of stain
60s
• Q5
You want to test a new drug that supposedly prevents sneezing in people allergic to grass. What is the independent variable?
drug
grass
sneezing
60s
• Q6
You want to measure the effect of different amounts of oxygen on the rate of yeast growth. What is the dependent variable?
rate of yeast growth
amount of oxygen
60s
• Q7
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 independent variable in this experiment?
removal of certain part of brain
remembering how to navigate through the maze
60s
• Q8
You want to see if playing music makes plants grow taller. What is the independent variable in this experiment?
music being played
height of plant
60s
• Q9
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?
the life of the flowers
60s
• Q10
A florist wants to see if Product X will extend the life of cut flowers so that they last longer. What is the independent variable?
life of flowers
60s
• Q11
Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he is going to create an experiment to find out if there is something better. What is his control group?
amount of tissue
Kleenex
type of tissue
Justin
60s
• Q12
Mario studied how far room temperature water would spurt out of a plastic milk carton when 3mm holes were punched at different heights from the bottom of the container. Identify a constant.
distance water traveled out of carton
3 mm holes
ice water from Iceland
different heights of holes in container
60s
• Q13
Nick wanted to see how high an ice cube would float in different temperatures of water. Identify the independent variable.
temperature of water
temperature the ice cube was at its' highest height
amount of water
height of ice cube
60s
• Q14
Tiffany was investing how fast it took Hayden to react to different sounds. Identify the dependent variable.
playing the trumpet over and over
Hayden
how fast Hayden reacted
how much time it took Hayden to react
60s
• Q15
Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he is going to create an experiment to find out if there is something better. What is 1 constant?
type of tissue
amount of tissue
Justin
mass of the snots the tissue can hold
60s

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