Experiments, Variables, Observations

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

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

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

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

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

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

Tags

NGSS.MS-PS2-2

the variable that is kept the same to make sure results are caused by the thing being tested

• independent variable
• dependent variable
• control variable

the variable that is changed by the scientist at the beginning of the experiment

• independent variable
• dependent variable
• control variable

the variable that is observed at the end of the experiment

• independent variable
• dependent variable
• control variable

Scientific Question:  Will a person fall asleep faster if they listen to music?
What is the independent variable?

• music
• time to fall asleep
• person

Scientific Question:  Will a person fall asleep faster if they listen to music?
What is the dependent variable?

• music
• time to fall asleep
• person