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A student wanted to know how the amount of ice affects the rate of cooling of a glass of water. What would be the independent variable in this experiment?
Amount of ice
Students wanted to know which type of liquid worked best for growing beans. They watered one plant with pop, one with lemonade, and one with just water. After one week, the measured the height of each plant. What would be the control?
Water
A student wanted to know if the amount of rainfall had an effect on the volume of water traveling down a river. What would be the dependent variable in this experiment?
Volume of water
Students wanted to know if the sweetness of cookies was affected the amount of sugar in the mix? What would be the IV in this experiment?
Amount of sugar
A student wanted to know how the color of clothing would affect the amount of sunlight absorbed. What would be the independent variable?
The color of the clothes
Students wanted to know if the temperature had an effect on the strength of a magnet. They tested one magnet at a high temperature, one at a low temperature, and one at room temperature. What would be the control?
Room temperature
Doctors wanted to know if the amount of smoking affected lung capacity. They studied 3 groups (non-smokers, weekly smokers, and daily smokers). What would be the control group?
Non-smokers
Students wanted to know if the temperature of the water had an effect on the strength of a hurricane. What would be a correct hypothesis for this experiment?
If the temperature of the water increases (or decreases), then the strength of the hurricane will increase (or decrease).
A student wanted to know if the distance a golf ball travels after being hit is affected by the height of the tee. What would be IV in this experiment?
The height of the tee
A student wanted to know if increasing the amount of baking soda would affect how much the cake rises when baked. How would you write a hypothesis for this experiment using the IF/THEN format?
If the amount of baking soda increases, then the amount of rising would increase (or decrease).
A student wanted to know which type of bat (wood or aluminum) would hit a baseball the farthest. What would be a constant in this experiment?
Same pitcher, same hitter, same field, same baseball, same weather conditions, same pitch
I normally use regular unleaded gas, and I was wondering if I used a different type of gas, ( Premium Unleaded or Diesel), if that would affect the amount of pollution my car produced. What would be the control in this experiment?
Regular unleaded gas
A student wanted to know how the length of a guitar string would affect the pitch. What would be IV in this experiment?
Length of a guitar string
Students wanted to know if the amount of sleep had an effect on their score on an exam. What would be a constant for this experiment?
Same exam, same teacher, same testing environment, same time allowed on the test
Students wanted to know if they gave baby mice vitamins would they grow at a faster rate. How would you phrase this hypothesis in the IF/THEN format?
If students give vitamins to baby mice, then the baby mice will grow faster (or slower).
Students wanted to know if levels of anxiety were affected by the amount of time spent on social media. What would be the control group in this experiment?
No time spent on social media
I want to know if different temperatures of water will affect how high an ice cube floats. What is the independent variable?
Different temperatures of water
I want to know if different temperatures of water will affect how high an ice cube floats. What is the dependent variable?
How high the ice cube floats
I want to know if different temperatures of water will affect how high an ice cube floats. What is a constant for this experiment to work correctly?
Same size ice cube, same amount of water, same sized bowl used, same location of experiment
Mrs. Kibler wanted to see how different types of music affected student´s pulse rates. How would you state the hypothesis in the If/Then format?
If Mrs. Kibler tested different types of music, then I predict classical music would have the lowest pulse rate. (or something similar)
If I test different types of baseball bats, then I predict the aluminum bat will hit the baseball the farthest. What is the independent variable?
The type of bat
If I test different types of baseball bats, then I predict the aluminum bat will hit the baseball the farthest. What is the dependent variable?
How far the baseball travels
Amy wanted to know which brand of popcorn will leave the least amount of kernels. What is the independent variable?
Different Brands of Popcorn
Jake wanted to know if exercising before taking a test would help improve his test scores. What is the dependent variable?
Test Scores


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