Biology Review-Scientific Principles

Testing how much weight different paper towel brands hold (select the true statement)

An educated guess or prediction, about what will happen (based on observations and research) is

In a test to see what brand of paper towels can hold the most weight, which variable is the Independent variable?

A statement of the scientist’s educated guess about the answer to the question.

This is the ONE variable in the experiment that the scientist deliberately changes.

In a test to see what brand of paper towels can hold the most weight, which variable is the dependent variable?

What is the variable that you measure to see the effect of the independent variable?

A controlled experiment is done under controlled conditions, meaning that just one factor are changed at a time.

In an experiment, conditions that are kept the same are called...

What happens to the dependent variable in a controlled experiment?

In measuring the effect of exercise on pulse rate, which statement is true:

In a controlled experiment, the variable that is changed by the scientist/student is:

When making a line graph from your data, the independent variable should go on which axis?

The set of data that you compare to the independent variable to see if there’s a difference.

The________________variable belongs on the x-axis on a graph.

Each time you repeat an experiment is called a trial.