Independent and Dependent Variables

Front

What is an independent variable?

Back

An independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

Why is it important to control variables in an experiment?

Back

Controlling variables is important to ensure that any changes in the dependent variable are due to the independent variable, allowing for accurate conclusions.

Front

In the experiment of dropping paper helicopters, what is the independent variable?

Back

The independent variable is the wing length of the helicopters.

Front

In the experiment of changing the scent of dog food, what is the dependent variable?

Back

The dependent variable is how much the dog eats.

Front

What effect does decreasing the temperature of a room have on a battery's lifespan?

Back

Decreasing the temperature is the independent variable that may affect the battery's lifespan, which is the dependent variable.

Front

What happens to an apple's freshness when refrigerated?

Back

Refrigeration is the independent variable that affects the dependent variable, which is the apple's freshness.

Front

What is the relationship between independent and dependent variables?

Back

The independent variable is manipulated to observe its effect on the dependent variable.

Front

Can there be more than one independent variable in an experiment?

Back

No, having only one independent variable helps to clearly identify its effect on the dependent variable.

Front

What is an example of an independent variable in a plant growth experiment?

Back

An example of an independent variable could be the amount of sunlight the plants receive.