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 brand of medicine
The person taking the medicine

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

amount of sunlight
Height of plant (in cm)
amount of water

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

skin tone of persons being tested
No sunscreen
Time of day

What paper towel brand absorbs the most water?

Brand of paper towel.
Temperature of water
Surface water is spilled on

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

Minutes until egg is cooked
Size of pans
Size of eggs

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

French fries are on the same table
Time to grow mold (days)
Fries from different restraurants

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

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

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

Sitting (no activity)
Person doing the activity
Time spent on activity

What type of detergent gets out grass stains the best?

Same wash cycle
washed in water without detergent
Area of stain removed (cm^2)