Scientific Experiment Variables

What term refers to the condition in the experiment that is changed or manipulated?

• independent variable

• control

• dependent variable

• constants

Tags

NGSS.MS-PS2-2

What is the difference between a scientific law and a scientific theory?

• A scientific theory explains how and why something happens. A scientific law describes what happens without explaining how or why.

• A scientific law explains how and why something happens. A scientific theory describes what happens without explaining how or why.

• A scientific theory is accepted without scientific testing, and a scientific law is accepted when it is proven to explain how and why something happens.

• A scientific law is an idea that has not yet undergone experimental testing, and a scientific theory is a law that has undergone experimental testing.

In what order should you complete the steps of the scientific method?

• State the problem, gather information, form a hypothesis, test the hypothesis, analyze data, and draw conclusions.

• Form a hypothesis, gather information, state the problem, test the hypothesis, analyze data, and draw conclusions.

• Form a hypothesis, test the hypothesis, state the problem, analyze data, draw conclusions, and gather information.

• Gather information, form a hypothesis, test the hypothesis, state the problem, analyze data, and draw conclusions.

What type of experiment does the following scenario illustrate? Scientists observe the feeding habits of brown bears. They observe and collect data, but do not manipulate the environment.

• natural experiment

• field experiment

• controlled experiment

• dependent experiment

What is the purpose of an experiment in the scientific process?

• to test a hypothesis

• to give peers an opportunity to review the law

• to eliminate having to write a hypothesis

• to collect observations without following the scientific process

Tags

NGSS.MS-PS1-2

Which of the following is the target of the experiment?

• subject

• control

• constant

• independent variable

Tags

NGSS.HS-LS1-3

What is the first thing you should do if you experience a safety issue during a lab?

• Ask an adult for help.

• Ask another classmate for help to avoid bothering the teacher.

• Go back to step one of the experiment and see why you encountered the issue.

• Skip that step of the experiment and move on to the next step.

Which graph should you use to measure the percentages of gases that make up the atmosphere? Look at the atmosphere as the whole and the separate gases as the parts.

• pie graph

• line graph

• bar graph

• data table

The data are interchangeable for both the x-axis and y-axis, so the students do not need to know which axis is horizontal and which axis is vertical.

• True

• False

Tags

NGSS.MS-PS3-1

Fill in the blanks: The ___-axis is always horizontal, and the ___-axis is always vertical.

• x, y

• y, x

• z, x

• y, z