Log in
Sign up for FREE
arrow_back
Library
Getting to Know Your Variables (Again!)
By Samantha Martin-Langmaid
star
star
star
star
star
Share
share
Last updated about 2 years ago
9 questions
Add this activity
1
1
1
1
1
1
1
1
1
For each experimental question, identify the independent variable (IV), dependent variable (DV), constants and the control.
For Each, Ask Yourself:
What amÂ
I
changing
on purpose so thatÂ
I
can answer my question? -- this is your
Independent Variable
.
What is beingÂ
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 yourÂ
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 number of sneezes
The brand of medicine
The time of day medicine is taken
No allergy medicine
The amount of allery medicine
The person taking the medicine
Independant Variable
Dependent Variable
Constants (3)
Control
Question 2
2.
Does the amount of soil a plant is placed in affect how tall it grows?
type of plant
No soil
Amount of soil
amount of sunlight
amount of water
Height of plant (in cm)
Independant Variable
Dependent Variable
Constants (3)
Control
Question 3
3.
Which type of sunscreen prevents burns for the longest amount of time?
No sunscreen
skin tone of persons being tested
Time of day
Time to burn (minutes)
Brand of sunscreen
amount of sunscreen used
Independant Variable
Dependent Variable
Constants (3)
Control
Question 4
4.
What paper towel brand absorbs the most water?
Amount of water absorbed (mL)
Surface water is spilled on
None (need a paper towel to absorb any water)
Size of paper towel
Brand of paper towel.
Temperature of water
Independant Variable
Dependent Variable
Constants (3)
Control
Question 5
5.
Sam wants to figure out which pan cooks eggs the fastest: bronze, copper or steel.
Minutes until egg is cooked
None (can't cook eggs without a pan)
Size of pans
Material pan is made out of.
Temperature stove burner is set on.
Size of eggs
Independant Variable
Dependent Variable
Constants (3)
Control
Question 6
6.
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)
None (can't test without french fries)
Fries from different restraurants
Number of french fries
Handle french fries with gloved hands
Independant Variable
Dependent Variable
Constants (3)
Control
Question 7
7.
Which brand of dish soap makes the most amount of suds?
Time water and soap is stirred
Amount of water
Brand of dish soap.
Volume of suds (mL)
Amount of dish soap
None (need suds to make bubbles)
Independant Variable
Dependent Variable
Constants (3)
Control
Question 8
8.
What type of physical activity gives you the highest heart rate?
Outside temperature
Person doing the activity
Sitting (no activity)
Type of physical activity
Time spent on activity
Heart rate (beats per minute)
Independant Variable
Dependent Variable
Constants (3)
Control
Question 9
9.
What type of detergent gets out grass stains the best?
Brand of detergent
Type of original stain
washed in water without detergent
Area of stain removed (cm^2)
Same wash cycle
Size of original stain
Independant Variable
Dependent Variable
Constants (3)
Control