Nature of Science

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 is the dependent variable?

• Type of plant
• Water, apple juice, milk
• Plant growth

The variable that is being tested or changed

• independent variable
• dependent variable
• control variable

The variable that is being measured

• independent variable
• dependent variable
• control variable

Scientific Question:  Does playing video games improve reaction time?
What is the independent variable?

• playing video games
• reaction time
• type of video game

An Educated Guess

• hypothesis

• observation

• experiment

• variable

the use of scientific methods to test a hypothesis

• hypothesis

• observation

• experiment

• variable

What is the variables that are kept the SAME (constant) throughout the entire experiment.

• scientific method

• independent variable

• dependent variable

• controlled variable

What does C mean in CER?

What does E mean in CER?

What does R mean in CER?