Experimental Investigation Variables

Front

What is a dependent variable in an experiment?

Back

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

Front

What is an independent variable in an experiment?

Back

The independent variable is the variable that is manipulated or changed in an experiment to observe its effect on the dependent variable.

Front

In the hypothesis 'If pine tree seedlings have a biodegradable root container, then they will grow faster than seedlings with bare roots,' what is the dependent variable?

Back

Tree growth.

Front

In the investigation testing the effect of shoe color on running speed, what is the independent variable?

Back

Shoe color.

Front

In the investigation testing the effect of shoe sole material on running speed, what is the dependent variable?

Back

Running speed.

Front

In the investigation testing the effect of different color paper on the flight length of a paper airplane, what is the dependent variable?

Back

Flight length.

Front

In the hypothesis 'If we increase the length of string on a pendulum, then it will take a longer time period to make one complete cycle back and forth,' what is the dependent variable?

Back

Time period.

Front

What is the purpose of a hypothesis in an experiment?

Back

A hypothesis is a testable prediction about the relationship between the independent and dependent variables.

Front

How do you identify the dependent variable in an experiment?

Back

The dependent variable can be identified by asking what is being measured or observed in response to changes in the independent variable.

Front

What is the relationship between independent and dependent variables?

Back

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