Independent Variables
Scenario: A student wants to test if the amount of sunlight affects how tall a plant grows.
What is the independent variable in this experiment?
Amount of sunlight
Scenario: Does the type of soil affect the amount of plant growth?
What is the dependent variable in this experiment?
Amount of plant growth
Scenario: A student examines whether different backpack weights affect posture while walking.
What is the control group?
Walking without a backpack
Scenario: A scientist tests how fertilizer type affects how tall tomato plants grow.
What are two possible constants?
Same plant type, amount of water, sunlight, pot size, soil type
Scenario: A scientist is testing whether the temperature of water affects how fast sugar dissolves.
What is the independent variable in this experiment?
Temperature of water
DAILY DOUBLE!!!
Scenario: Does different oven temperatures affect how long it takes cookies to bake.
What is the dependent variable in this experiment?
The time is takes cookies to bake
Scenario: A student tests if the amount of daily screen time affects hours of sleep.
What is the control group?
Group with no screen time before bed
Scenario: A baker tests if baking temperature affects the fluffiness of cupcakes.
What are two possible constants?
Same ingredients, baking time, recipe, oven type
Scenario: Does different amounts of water affect how fast seeds sprout.
What is the independent variable in this scenario?
The amount of water
Scenario: Does the temperature of a classroom affects student focus?
What is the dependent variable in this experiment?
Student focus
Scenario: A coach tests if different warm-up routines affect sprint speed.
What is the control group?
Group with no warm-up
Scenario: A student tests if the color of a car affects how hot the inside of the car gets in the sun.
What are two possible constants?
Same car model, same location, same time in sun
Scenario: Does the type of shoes a runner wears affect their running speed.
What is the independent variable in this scenario?
Type of shoes
Scenario: A coach tests if different warm-up routines affect sprint speed.
What is the dependent variable in this experiment?
Sprint speed
Scenario: A student tests how different music genres affect reading comprehension.
What is the control group?
Group that reads in silence
DAILY DOUBLE!!!!
Scenario: A scientist studies how different air pressures affect how far a soccer ball can be kicked.
What are two possible constants in this experiment?
Same ball, same kicker, same field, same weather
Scenario: A student tests if more time on social media affects how much homework they finish.
What is the independent variable in this experiment?
Amount of time on social media
Scenario: Does the type of paper used to make a paper airplane affect how far a paper airplane flies?
What is the dependent variable in this experiment?
Distance the paper airplane flies
Scenario: A scientist tests how fertilizer type affects how tall tomato plants grow.
What is the control group?
Tomato plants with no fertilizer
Scenario: A class tests if the temperature of water affects how fast it freezes.
What are two possible constants in the experiment?
Same type and amount of water, same freezer, same container