Variables
What is another name for a manipulated variable?
independent variable
A gardener wanted to know if his roses would stay fresher longer if he wrapped them in plastic. He bought 6 rose stems at the same time from the same florist. He wrapped three in plastic wrap and put all of them in the refrigerator. Each day he counted the number of brown leaves.
What is the dependent variable?
number of brown leaves
Gaining information through the 5 senses-- the first step of the scientific method.
Make observations and ask a question!
The variable that the scientist changes in order to test it.
MANIPULATED/INDEPENDENT VARIABLE
A gardener wanted to know if his roses would stay fresher longer if he wrapped them in plastic. He bought 6 rose stems at the same time from the same florist. He wrapped three in plastic wrap and put all of them in the refrigerator. Each day he counted the number of brown leaves.
What is the manipulated/independent variable?
plastic wrap
An educated guess or prediction for what might happen in an experiment.
HYPOTHESIS
The variable that you observe or measure during an experiment.
RESPONDING/DEPENDENT VARIABLE
A gardener wanted to know if his roses would stay fresher longer if he wrapped them in plastic. He bought 6 rose stems at the same time from the same florist. He wrapped three in plastic wrap and put all of them in the refrigerator. Each day he counted the number of brown leaves.
What are 2 possible control variables?
SAME STORE
PLASTIC WRAP
SAME TYPES OF ROSE
SAME TEMPERATURE
The step of the scientific method where you make graphs, look for patterns, and think about what happened.
ANALYSIS
Something that stays the same to keep an experiment fair.
CONTROL VARIABLE
Scientists were trying to determine if junk food would cause a mouse to gain weight. The diet of mice was varied. Some mice were given junk food, and some mice were given Mouse Chow. The mice were weighed daily. All mice were the same gender, same age and same type of mouse.
What is the manipulated/independent variable?
diet of the mice (type of food)
Numbers, observations, or information you collect in an experiment.
DATA
The number of variables that you can change in an experiment.
ONE
Scientists were trying to determine if junk food would cause a mouse to gain weight. The diet of mice was varied. Some mice were given junk food, and some mice were given Mouse Chow. The mice were weighed daily. All mice were the same gender, same age and same type of mouse.
What are the responding/dependent and control variables?
Dependent: Weight gain
Control: gender, age, type of mouse
A list of things you do to perform the experiment (not Scientific Method)
PROCEDURES