Exploring Scientific Variables in Experiments

Jacob joins Mr. Conan in a plant experiment to learn about scientific variables. They discuss independent, controlled, and dependent variables, emphasizing the importance of changing only one variable at a time to ensure a fair test. After observing the results, Jacob understands how the amount of water affects plant growth. The video concludes with a dance party celebration.

What was the main difference in the treatment of the two plants in the experiment?

• The amount of sunlight received

• The type of plant

• The amount of water given

• The type of soil used

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Why is it important to keep all variables except one constant in an experiment?

• To make the experiment more interesting

• To make the experiment easier to conduct

• To ensure that the results are due to the one variable being tested

• To save time and resources

Tags

NGSS.MS-PS1-2

What is the term for the variable that is changed in an experiment?

• Controlled variable

• Independent variable

• Dependent variable

• Random variable

What are controlled variables?

• Variables that are changed during the experiment

• Variables that are kept the same throughout the experiment

• Variables that are measured in the experiment

• Variables that are not considered in the experiment

What did Jacob observe about the plant that received more water after spring break?

• It had fewer leaves than the other plant

• It was the same size as the other plant

• It was bigger than the other plant

• It was smaller than the other plant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What conclusion did Jacob draw from the experiment?

• The type of plant affects plant growth

• The amount of water affects plant growth

• The type of soil affects plant growth

• The amount of sunlight affects plant growth

Tags

NGSS.MS-LS1-5

What is the dependent variable in the experiment?

• The amount of sunlight received

• The growth of the plant

• The type of plant used

• The amount of water given

Tags

NGSS.MS-LS1-5

How can you identify the dependent variable in an experiment?

• It is the variable that is measured

• It is the variable that is kept constant

• It is the variable that is changed

• It is the variable that is ignored

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What should you remember when setting up an experiment?

• Change multiple variables at once

• Keep all variables the same

• Have one independent variable and one dependent variable

• Ignore controlled variables

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is the purpose of controlled variables in an experiment?

• To change the conditions of the experiment

• To make the experiment more complex

• To ensure that the results are due to the independent variable

• To measure the outcome of the experiment