Variables Practice

On a graph, which axis shows the dependent variable?

• x-axis
• y-axis
• neither
• it changes

Name the INDEPENDENT variable from the table below.

• words
• minutes

In the table, Bubbles is the ______________.

• independent variable

• dependent variable

If I ride my bike to school instead of walking, then I will get to school faster. What is the dependent variable?

• True
• How fast you get to school
• Riding a bike or walking
• False

If I study for my scientific method test, then I will have a better test score. What is the dependent variable?

• Scientific Method
• Studying
• Independent variable
• Test score

If you conduct an experiment where you place 5 of the same red candies in different types of soda, all in the same amount of liquid and same type cups the indipendent variable is what? 

• Kind of soda

• Type of cup

• Amount of soda

• Color of candy

A scientist investigates the effect of carbon dioxide on plant height. The scientist grows plants in several closed containers. All the plants receive the same amounts of water and light, but the air in each container has a different amount of carbon dioxide. What is the independent variable in this experiment?

• the amount of carbon dioxide in each container

• the number of plants in each container

• the amount of water provided to the plants

• the height of each plant after a period of time

Researchers are developing a new fertilizer designed to improve the growth of endangered Hawaiian plants. The fertilizer was applied to one hundred plants in a greenhouse. The temperature, humidity and amount of water were kept constant. Which is best for the researchers to do next?

• A compare plants that received fertilizer plants that received none

• B begin selling the fertilizer to gardeners living in hot, dry climates

• C change the conditions in the greenhouse and retest the fertilizer

• D test the fertilizer on plants that are adapted to cooler climates

A scientist investigates the effect of carbon dioxide on plant height. The scientist grows plants in several closed containers. All the plants receive the same amounts of water and light, but the air in each container has a different amount of carbon dioxide. What is the independent variable in this experiment?

• the amount of carbon dioxide in each container

• the number of plants in each container

• the amount of water provided to the plants

• the height of each plant after a period of time

A meteorologist recorded high temperatures for five days at three locations on land. The data are shown in the table above.

• Areas at the beach have the coolest temperatures

• Areas farther from the beach always have the warmest temperatures.

• Areas at the beach have the most stable temperatures.

• Areas farther from the beach always have the same weather as areas at the beach