I Change It (Independent Variable)
In an experiment testing how the amount of water affects plant growth, what is the independent variable?
Amount of water
In an experiment testing how fertilizer affects plant height, what is the dependent variable?
plant height
If the amount of sunlight increases, then the plant will grow taller. What is the independent and dependent variable?
Independent Variable: Amount of sunlight
Dependent Variable: Plant height
Students record the height of plants each week. What is being measured?
Plant height
Students test how different brands of batteries affect how long a flashlight stays on. What is the independent and dependent variables?
Independent Variable: Brand of battery
Dependent Variable: How long the flashlight stays on
Students test how different types of soil affect bean plant height. What is the independent variable?
type of soil
Students test how the temperature of water affects how fast sugar dissolves. What is the dependent variable?
How fast sugar dissolves
If the temperature of the water increases, then sugar will dissolve faster. What is the independent and dependent variable?
Independent Variable: Water temperature
Dependent Variable: How fast sugar dissolves
Students record how long it takes ice to melt in different temperatures. What is being measured?
Time it takes to melt
Students test how the amount of exercise affects heart rate. What is the independent and dependent variables?
Independent Variable: Amount of exercise
Dependent Variable: Heart rate
Scientists test how the temperature of water affects how fast salt dissolves. What is the independent variable?
Water temperature
Students test how different paper towel brands affect how much water is absorbed. What is the dependent variable?
Amount of water absorbed
If the height of the ramp increases, then the car will travel farther. What is the independent and dependent variable?
Independent Variable: Ramp height
Dependent Variable: Distance traveled
Students record how far a car rolls down ramps of different heights. What is being measured?
Distance traveled
Students test how the temperature of air affects how high a balloon rises. What is the independent and dependent variable?
Independent Variable: Air temperature
Dependent Variable: Height balloon rises
Students test how ramp height affects how far a toy car travels. What is the independent variable?
ramp height
Scientists test how the amount of light affects plant growth. What is the dependent variable?
Plant growth
If more fertilizer is added to the soil, then the plant will grow taller. What is the independent and dependent variable?
Independent Variable: Amount of fertilizer
Dependent Variable: Plant height
Students record how many jumping jacks they can do after drinking different sports drinks. What is being measured?
Number of jumping jacks
Students test how the length of a pendulum affects how fast it swings. What is the independent and dependent variable?
Independent Variable: Length of pendulum
Dependent Variable: Speed of swinging
In an experiment testing how the number of hours of sunlight affects plant growth, what is the independent variable?
number of hours of sunlight
Students test how different ramp heights affect how far a car travels. What is the dependent variable?
Distance traveled
If the number of hours studied increases, then test scores will improve. What is the independent and dependent variable.
Independent Variable: Hours studied
Dependent Variable: Test scores
Students record how much weight a bridge can hold after building it with different materials. What is being measured?
Amount of weight held
Students test how different amounts of salt in water affect the boiling point of water. What is the independent and dependent variable?
Independent Variable: Amount of salt
Dependent Variable: Boiling point