Dr. Smith wants to see if playing violent video games increases a personโs blood pressure. What would be the independent variable in his experiment?
Type of video game played (or whether video games are played)
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boom
Lose 50 points!
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gold
Win 50 points!
Okay!
fairy
Take points!
5
10
15
20
25
thief
Give points!
5
10
15
20
25
15
John wants to find out which brand of dog food his dog would rather eat. What would be the dependent variable?
Amount of food the dog eats
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15
Clarkson thinks that a small car would get better gas mileage than a bigger car. What would be the independent variable in his experiment?
Size of the car
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15
Rose wants to know which energy drink would keep her awake the longest. To test this, what would she need to use as a constant?
Drink at the same time each day, drink the same amount of each drink, same sleeping environment, same activities
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15
Jeremy thinks putting tape around a carโs doors would make the car waterproof. He tries filling the car with water, then adds the tape and fills the car with water again to see how much leaks out. What is the dependent variable?
Amount of water that stays in the car (or amount that leaks out)
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15
Rose wants to know which energy drink would keep her awake the longest. What would be the independent variable in her experiment?
Different brands of energy drinks
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15
Jeremy thinks putting tape around a carโs doors would make the car waterproof. He tries filling the car with water, then adds the tape and fills the car with water again to see how much leaks out. What is the independent variable?
Tape or no tape
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15
John wants to find out which brand of dog food his dog would rather eat. What would be the independent variable?
Brand of dog food
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heart
Other team wins 20 points!
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star
Double points!
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shark
Other team loses 10 points!
Okay!
baam
Lose 20 points!
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15
James believes that a motorcycle can get him across town faster than a car would. He rides his motorcycle while his friend Richard drives his car so they can see who will get across town first. What is the independent variable?
Type of vehicle they drive (car or motorcycle)
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15
Clara wants to know if getting more sleep before a test will improve her scores. What would be the dependent variable in this experiment?
Test scores
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Check
trap
No points!
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gold
Win 50 points!
Okay!
shark
Other team loses 25 points!
Okay!
lifesaver
Give 15 points!
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15
Clara wants to know if getting more sleep before a test will improve her scores. What would be the independent variable in this experiment?
Amount of sleep
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15
Jeremy thinks putting tape around a carโs doors would make the car waterproof. He tries filling the car with water, then adds the tape and fills the car with water again to see how much leaks out. What should be a constant?
Same car or type of car, same liquid poured in, same location of car, same driving conditions