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 brand of medicine
The number of sneezes
The time of day medicine is taken

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?

No sunscreen
Time of day
amount of sunscreen used

What paper towel brand absorbs the most water?

Size of paper towel
Amount of water absorbed (mL)
Brand of paper towel.

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

Size of eggs
Minutes until egg is cooked
None (can't cook eggs without a pan)

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

Handle french fries with gloved hands
None (can't test without french fries)
French fries are on the same table

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

Amount of dish soap
Amount of water
Brand of dish soap.

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

Time spent on activity
Heart rate (beats per minute)
Type of physical activity

What type of detergent gets out grass stains the best?

Brand of detergent
Size of original stain
Same wash cycle