Scientific Variables

The variable that is changed on purpose is called?

A doctor gave the same patient, different numbers of pills each day, the doctor measured the level of histamine (chemical) in his body. Determine the independent variable.

Factors that can change in an experiment are called?

If I increase the volume of water, then the height of the plant will increase.  What is the dependent variable?

How many independent variables are in a fair test?

A student wants to find out if sleeping more would affect his test scores. Identify the independent variable.

What is the effect of increasing the volume of water on the plants growth? What variables would need to be controlled?

A student wants to investigate the effect of different liquids on the height of the plant. Determine the independent variable.

A student wants to investigate the effect of different liquids on the height of the plant. Determine the dependent variable.

A doctor gave the same patient, different numbers of pills each day, the doctor measured the level of histamine (chemical) in his body. Determine the dependent variable.

The variable that is measured as the result is called...

What is a hypothesis?

A study was done to find if different tire treads affect the braking distance of a car. Identify the independent variable

A student wants to investigate the effect of different liquids on the height of the plant. State 2 variables that should be controlled.

A student wants to find out if sleeping has an effect on his test scores. Identify the dependent variable.