Independent Variables
The time it takes to run a mile, depends on the time of day it is run. What is the independent variable?
The independent variable is the time of day it is run.
Does the height you drop a ball from affect the height it will bounce? What is the dependent variable?
The height the ball bounces after being dropped.
List four variables that would have to be controlled in the following experiment:
Which brand of laundry detergent will get a dirty spot out of clothes best?
Type of stain on clothes
How old the stain on the clothes is
Type of clothing the stain is on
Temperature of water used in machine
Washing machine used
Amount of laundry detergent used
I will drop a variety of balls from a height of ten feet and use a stopwatch to record the time it takes for them to hit the ground.
What is Experiment?
Red tulip leaves
Qualitative
The higher the temperature of water, the faster an egg will cook. What is the independent variable?
The temperature of the water.
Can a person run faster in tennis shoes or sandals? What is the dependent variable?
The time it takes the person to run a certain distance.
List four variables that would have to be controlled in the following experiment;
Which brand of paper towel absorbs the most liquid?
Amount of paper towel used
Type of liquid used
Amount of liquid used
Time given for absorption
How absorption measured
If two objects are dropped at the same time, then they will both hit the ground at the same time because gravity is the same for both of them.
Hypothesis
5 tulip leaves
Quantitative
Grass will grow faster if it is fertilized. What would be the independent variable?
The independent variable is the use of fertilizer.
Does wearing a dark color shirt increase your body temperature more than wearing a light colored shirt? What is the dependent variable?
The body temperature of the person wearing the shirt.
List four variables that would have to be controlled in the following experiment:
Which brand of soda reacts the most with Mentos?
Amount of soda
Number of Mentos
Measurement of reaction
Containers used for experiment
Temperature of soda
The results of this experiment showed that objects fall at the same rate despite weight differences.
Conclusion
10 inches wide
Quantitative
Citrus plants that receive more water will have more juice in the fruit. What is the independent variable?
The amount of water given to the plants.
Does a skateboard travel further on grass, the sidewalk, or on the paved road? What is the dependent variable?
The distance the skateboard travels on each surface.
List four variables that would have to be controlled in the following experiment:
Can a person jump higher in low top or high top tennis shoes?
Measurement of jump
Surface of platform
Number of jumps
Person jumping
Jump type
Do heavier objects fall faster than lighter objects?
Question
fluffy cotton ball
Qualitative
A student wanted to see if their score on spelling tests would improve if they spent more minutes studying the spelling words. What is the independent variable?
The amount of time spent on studying for spelling.
Do all clear liquids freeze at the same temperature? What is the dependent variable?
The temperature at which the liquids freeze.
List four variables that would have to be controlled in the following experiment:
Does temperature affect the rate at which mold grows?
Item mold grown on
Temperatures
Time given
Size of item
Age of item
I saw that a bowling ball fell off the roof at a fast rate and landed on the ground. I saw that a baseball fell off the roof at a fast rate, too.
Observation
On an index card, identify the dependent variable, independent variable, and four control variables for the following experiment:
Does the color of light effect the growth of plants?
Dependent variable: Growth of Plants
Independent variable: Color of Light
Controlled variables:
Size of plants
Amount of light per day
Type of container & soil
Amount of water per day