Scientific Method Study Guide

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion

A possible explanation for a question or problem is a

• hypothesis

• scientific method

• experiment

What is a hypothesis?

• the thing changed on purpose in the experiment

• an explanation about what you observed

• using your 5 senses to gather data

• an educated guess about the outcome of an experiment

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?

• Type of plant, amount of music, and sunlight
• Water, apple juice, milk
• Plant growth

Which is not an example of a scientific question?

• Why is the sky blue?

• How do birds fly?

• Who is the best singer of all time?

The variable being changed in an experiment is the

• independent variable

• dependent variable

the variable being measured at the end of an experiment

• independent variable

• dependent variable

The factors in an experiment that can be changed are called

• variables

• control groups

• experiments

Controlled means __________.

• unchanged

• changed

• constant