Independent and Dependent Variables Practice

Front

What is the definition of a dependent variable?

Back

A variable that is measured or observed in an experiment.

Front

Research question: How does the amount of sunlight affect the growth of a plant? Which of the following is an example of a dependent variable for this research question? The hours of sunlight, The height of a plant, The type of plant, The amount of darkness

Back

The height of a plant

Front

In experimental design, the independent variable is...

Back

The variable that is manipulated or changed by the researcher

Front

The one variable in an experiment that is purposely changed by the scientist is the________________.

Back

independent variable

Front

Research Question: Does the type of gasoline put in a car affect how fast the car can drive? What is the independent variable?

Back

Type of gasoline

Front

A student wants to test the effects of different types of exercise on heart rate. What is the dependent variable?

Back

heart rate

Front

In an experiment to find out how the temperature affects the bounce height of a ball, the dependent variable is ...

Back

bounce height

Front

A testable prediction about a scientific investigation is a(n)

Back

Hypothesis

Front

How many independent variables should you have in an experiment?

Back

one

Front

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. What should be kept constant (control variable)?

Back

type of plant, flower pot,  soil, and amount of sunlight and amount of liquid