Scientific Method

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion

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

Testing a hypothesis often involves a(n):

• answer
• experiment
• problem
• safety check

On what axis should the independent variable always be?

• X
• Y

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 controls?

• Type of plant, amount of music, and sunlight

• Water, apple juice, milk

• Plant growth

A series of steps used by scientists to solve a problem or answer a question. 

• scientific method
• recipe
• data collection
• metric system

What is an observation?

• Something you measure or detect with your senses.

• The way you feel about something

• An educated guess

• A theory that has been disproved

A scientific observation is:

• Based on facts

• based on your personal beliefs

• Based on opinions

• Based on a rumor you heard in the bathroom

Which of the following is NOT a testable question?

• How do rockets work?

• Does fertilizer help plants grow bigger?

• Does heart rate increase with exercise?

• Does the freezing point of water change at different elevations?