Exploring Scientific Method Variables

The video tutorial introduces the concept of variables in scientific experiments, explaining independent, dependent, and controlled variables with examples. It uses a plant growth experiment and a mint cooling experiment to illustrate these concepts. Students are instructed to identify these variables in other experiments as part of their learning activity.

What is the main focus of the video tutorial?

• Mathematical equations

• Physics experiments

• The scientific method and variables

• The history of science

Which type of variable is changed by the experimenter?

• Controlled variable

• Random variable

• Independent variable

• Dependent variable

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

In the example with Luke's plant experiment, what was the independent variable?

• Amount of water

• Type of light

• Size of the pot

• Type of plant

What does the dependent variable represent in an experiment?

• The variable that is ignored

• The variable that is measured

• The variable that is changed

• The variable that is kept constant

Tags

NGSS.MS-PS2-2

In Luke's plant experiment, what was the dependent variable?

• Amount of water

• Type of light

• Growth of the plants

• Type of pot

Tags

NGSS.MS-LS1-5

What are controlled variables?

• Variables that are ignored

• Variables that are measured

• Variables that are kept the same

• Variables that are changed

In Luke's plant experiment, which of the following was a controlled variable?

• Type of light

• Growth of the plants

• Temperature of the room

• Type of plant

Tags

NGSS.MS-ETS1-1

What is the independent variable in the mint experiment?

• Temperature of the water

• Number of mints

• Size of the glass

• Starting temperature of the water

Tags

NGSS.MS-PS3-4

What is the dependent variable in the mint experiment?

• Size of the glass

• Number of mints

• Temperature of the water

• Type of mints

Which of the following is a controlled variable in the mint experiment?

• Type of mints

• Size of the glass

• Temperature of the water

• Number of mints

Tags

NGSS.MS-PS2-2