Variables
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VARIABLES
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Variables. There are three types of variables in an experiment . You can only change ONE variable (one thing) in an experiment. Purpose: What amount of water will make the flower grow the tallest?. CONTROL VARIABLE/CONTROL GROUP. - PowerPoint PPT Presentation
Transcript of Variables
VARIABLES
There are three types of variables in an experiment.
You can only change ONE variable (one thing) in an experiment
FLOWER TYPE
AMOUNT OF WATER
HEIGHT OF FLOWER
ROSE10 mL 30
centimeters
ROSE 5 mL 10 centimeters
Purpose: What amount of water will make the flower grow the tallest?
CONTROL VARIABLE/CONTROL GROUP
1. A controlled variable/group is a variable/group that DOES NOT CHANGE. IT STAYS THE SAME.
2. Ask yourself: What does not change in this experiment or what stays the same?
FLOWER TYPE
AMOUNT OF WATER
HEIGHT OF FLOWER
ROSE10 mL 30
centimeters
ROSE 5 mL 10 centimeters
Purpose: What amount of water will make the flower grow the tallest?
What is the control variable?????
INDEPENDENT VARIABLE
1. An independent variable is something that is being changed or what your testing in the experiment.
2. You can only have ONE independent variable!!!!!!!
3. Ask yourself: What is being changed in the experiment or what am I testing?
FLOWER TYPE
AMOUNT OF WATER
HEIGHT OF PLANT
ROSE10 mL 30
centimeters
ROSE 5 mL 10 centimeters
Purpose: What amount of water will make the rose grow the tallest?
What is the independent variable?
DEPENDENT VARIABLE
A dependent variable is the variable that changes because of the independent variable.
It is the end result of the experiment.
Ask yourself: What is the end result of my experiment?
FLOWER TYPE
AMOUNT OF WATER
HEIGHT OF PLANT
ROSE10 mL 30
centimeters
ROSE 5 mL 10 centimeters
Purpose: What amount of water will make the rose grow the tallest?
What is the dependent variable?
PRACTICE
Student age Puzzle Time
9 years old 100 piece animal puzzle
45 minutes
14 years old 100 piece animal puzzle
34 minutes
18 years old 100 piece animal puzzle
29 minutes
What age of student will put together a puzzle the quickest?
Student age Puzzle Time
9 years old 100 piece animal puzzle
45 minutes
14 years old 100 piece animal puzzle
34 minutes
18 years old 100 piece animal puzzle
29 minutes
Control: PuzzleIndependent: Student ageDependent: Time
WHICH GENDER MOUSE (MALE OR FEMALE) WILL GET THROUGH THE MAZE THE QUICKEST?
Maze type Mouse gender
Time
Zig-zag maze
Male 48 seconds
Zig-zag maze
Female 17 seconds
WHICH GENDER MOUSE (MALE OR FEMALE) WILL GET THROUGH THE MAZE THE QUICKEST?
Maze type Mouse gender
Time
Zig-zag maze
Male 48 seconds
Zig-zag maze
Female 17 seconds
