Scientific Method Scenarios

What step does every scientific experiment begin with?

• hypothesis

• question/problem

• procedures

• conclusion

Why do we want to test one variable at a time?

• Because it is hard to setup a data table with more

• To know what is causing the changes

• It is what has always been done

• No one really knows

How many variables can be tested in a controlled experiment?

• one

• two

• three

• as many as possible

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball

• Force acting on the ball

• Height that the ball bounces

• Height from which the ball is dropped

Tags

NGSS.MS-PS3-5

This step of the scientific method is an educated guess or a prediction. 

• Hypothesis

• Research

• Observation

• Conclusion

The summary at the end of an experiment that explains the results. 

• conclusion

• procedures

• materials

• responding variable

Tags

NGSS.MS-LS1-5

Which side of a penny will hold more drops of water? Choose the best hypothesis.

• If I use the heads side of a penny, then it will hold more drops of water than tails.

• Heads

• Tails

• Tails will hold more drops of water.

What is the first step in the scientific method?

• Observation

• Hypothesis

• Experimentation

• Conclusion

In a scientific experiment, what is the purpose of a control group?

• To test multiple variables

• To serve as a standard for comparison

• To ensure the experiment is valid

• To increase the sample size

Which of the following is a qualitative observation?

• The liquid is blue

• The liquid is 50 ml

• The temperature is 25°C

• The mass is 10 grams