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Getting to Know Your Variables (Again!)

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Last updated about 2 years ago
9 questions
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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
Question 1
1.

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

  • The time of day medicine is taken
  • The brand of medicine
  • No allergy medicine
Question 2
2.

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

  • Amount of soil
  • No soil
  • Height of plant (in cm)
Question 3
3.

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

  • Brand of sunscreen
  • Time to burn (minutes)
  • Time of day
Question 4
4.

What paper towel brand absorbs the most water?

  • Brand of paper towel.
  • Surface water is spilled on
  • None (need a paper towel to absorb any water)
Question 5
5.

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

  • Size of pans
  • None (can't cook eggs without a pan)
  • Material pan is made out of.
Question 6
6.

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

  • Time to grow mold (days)
  • Fries from different restraurants
  • Handle french fries with gloved hands
Question 7
7.

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

  • Brand of dish soap.
  • Time water and soap is stirred
  • Volume of suds (mL)
Question 8
8.

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

  • Heart rate (beats per minute)
  • Outside temperature
  • Time spent on activity
Question 9
9.

What type of detergent gets out grass stains the best?

  • Same wash cycle
  • washed in water without detergent
  • Type of original stain
The amount of allery medicine
The number of sneezes
The person taking the medicine
Independant Variable
Dependent Variable
Constants (3)
Control
type of plant
amount of sunlight
amount of water
Independant Variable
Dependent Variable
Constants (3)
Control
No sunscreen
skin tone of persons being tested
amount of sunscreen used
Independant Variable
Dependent Variable
Constants (3)
Control
Amount of water absorbed (mL)
Size of paper towel
Temperature of water
Independant Variable
Dependent Variable
Constants (3)
Control
Minutes until egg is cooked
Temperature stove burner is set on.
Size of eggs
Independant Variable
Dependent Variable
Constants (3)
Control
French fries are on the same table
None (can't test without french fries)
Number of french fries
Independant Variable
Dependent Variable
Constants (3)
Control
None (need suds to make bubbles)
Amount of water
Amount of dish soap
Independant Variable
Dependent Variable
Constants (3)
Control
Sitting (no activity)
Type of physical activity
Person doing the activity
Independant Variable
Dependent Variable
Constants (3)
Control
Area of stain removed (cm^2)
Size of original stain
Brand of detergent
Independant Variable
Dependent Variable
Constants (3)
Control