Saturday, August 21, 2010

Identifying the independent, dependent, and controlled variable?

1. Fill each 16 ounce glass 2cm from the top, one with hot water and one with cold water.


2.Allow the glasses to stand for 5 minutes.


3.After 5 minutes, add one drop of food colouring to each glass. Be consistent about how you add the food colouring to each glass. For example, drop in the food colouring from the same height above each glass. Observe what will happen to the food coluring in each glass.





what are the independent, dependent, and controlled variables?Identifying the independent, dependent, and controlled variable?
Independent variable is the variable that is being changed. In the given situation, the independent variable is the temperature of water since you r changing it.


Dependant variable is the one that is affected or caused by the independant variable. In your experiment, it will be the affect of food color you added in.


Controlled varible is the one that should remain the same with every sample. In the given situation, the controlled variables are the amount of water and food coloring, the height from which the food coloring is dropped and the time given to each sample that is 5 mins, Any differences in the controlled variables will make the experiment bias.


Hope that helps....Identifying the independent, dependent, and controlled variable?
The Independent Variable: The Water Temperature (Hot or cold)


Dependent Variable: The result of the experiment


Controlled Variables: Volume of water, time the water is left to stand, food coloring amount, height the food coloring is dropped from.

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