Getting to Know Your Variables (Again!)

Last updated over 5 years ago

9 questions

Note from the author:

Getting to Know Your Variables (Again!)

Last updated over 5 years ago

9 questions

Note from the author:

Experimental Design--ID IV, DV, Constants and Controls

For each experimental question, identify the independent variable (IV), dependent variable (DV), constants and the control.

For Each, Ask Yourself:
What am I changing on purpose so that I can answer my question? -- this is your Independent Variable.
What is being measured? What data (numbers) are being collected? --this is your Dependent Variable.
What is staying the same in all of the exeriments? -- these are your Constants.
What is your zero IV level? What is your normal group that does not recieve any testing.---This is your Control

Does the brand of allergy medication affect the number of times a person sneezes?

The amount of allery medicine
The time of day medicine is taken
No allergy medicine

Does the amount of soil a plant is placed in affect how tall it grows?

No soil
amount of water
type of plant

Which type of sunscreen prevents burns for the longest amount of time?

amount of sunscreen used
Time to burn (minutes)
No sunscreen

What paper towel brand absorbs the most water?

None (need a paper towel to absorb any water)
Surface water is spilled on
Size of paper towel

Sam wants to figure out which pan cooks eggs the fastest: bronze, copper or steel.

Temperature stove burner is set on.
Size of eggs
Material pan is made out of.

Ashton wants to see which fast food restaurant has french fries that will take the longest to grow mold.

None (can't test without french fries)
Number of french fries
Handle french fries with gloved hands

Which brand of dish soap makes the most amount of suds?

Amount of water
Amount of dish soap
Volume of suds (mL)

What type of physical activity gives you the highest heart rate?

Time spent on activity
Outside temperature
Heart rate (beats per minute)

What type of detergent gets out grass stains the best?

washed in water without detergent
Brand of detergent
Area of stain removed (cm^2)