Day 78: 8.PFA.3 Independent and Dependent Variables

Front

What is an independent variable?

Back

An independent variable is a variable 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 a variable that is measured and affected in an experiment. It depends on the independent variable.

Front

In the relationship between the number of students in a class and the number of laptops needed, which is the independent variable?

Back

The number of students in the class.

Front

In the relationship between how much water you use and the price of your water bill, which is the dependent variable?

Back

The price of your water bill.

Front

If the amount of fabric affects the number of blankets made, what is the dependent variable?

Back

The number of blankets made.

Front

In the relationship between the amount of people at an event and the number of chairs needed, which is the independent variable?

Back

The amount of people at an event.

Front

If the amount of gas in a car affects how many miles it can drive, what is the independent variable?

Back

The amount of gas in the car.

Front

What is the purpose of identifying independent and dependent variables in an experiment?

Back

Identifying these variables helps to understand the relationship between them and how changes in one affect the other.

Front

Give an example of an independent variable in a study about plant growth.

Back

The amount of sunlight the plants receive.

Front

Give an example of a dependent variable in a study about plant growth.

Back

The height of the plants.