Science Experiments

What is the purpose of a controlled variable in a scientific experiment?

• It is the variable that we manipulate to test our hypothesis.

• It is the variable that changes in response to the independent variable.

• It is a factor that we keep constant to ensure a fair test.

• It is the outcome or result we are trying to measure.

In a science experiment, which variable is the one that you deliberately change or manipulate to see its effect?

• Controlled variable

• Independent variable

• Dependent variable

• Control group

Tags

NGSS.MS-PS3-1

Which of the following best describes the dependent variable in a scientific experiment?

• The variable that we keep constant to ensure accuracy.

• The variable that we manipulate to test our hypothesis.

• The variable that we measure or observe to see how it responds to changes.

• The variable that we use as a standard for comparison.

Tags

NGSS.MS-PS1-2

In an experiment investigating the effect of different amounts of light on plant growth, which variable represents the amount of light?

• Independent variable

• Dependent variable

• Controlled variable

• Control group

Tags

NGSS.MS-ETS1-1

What term is used for the group in an experiment that does not receive the experimental treatment and is used as a baseline for comparison?

• Independent variable

• Dependent variable

• Control group

• Controlled variable

In a science experiment, why is it important to clearly define and identify the variables?

• To make the experiment more complicated

• To confuse the participants

• To ensure that the experiment is not repeatable

• To communicate the purpose and design of the experiment and its results effectively

Tags

NGSS.MS-PS2-2

What is the independent variable?

• Length of the pendulum

• Time for one full swing

• Mass of the pendulum bob

• initial angle

• air resistance

What is the dependent variable?

• Length of the pendulum

• Time for one full swing

• Mass of the pendulum bob

• initial angle

• air resistance

Students are experimenting with different paper airplane designs to see which one travels the farthest distance.

What is the independent variable?

• Type of paper

• Launching force

• Air resistance

• Paper airplane design

• Distance traveled by the paper airplane

Tags

NGSS.MS-PS2-2

A scientist is conducting an experiment to see how the weight of a car affects its fuel efficiency. What is the dependent variable in this experiment?

• The weight of the car

• The type of fuel used

• The fuel efficiency of the car

• The color of the car