Variables Assessment Review

Ryan wants to test if the temperature of his fish tanks affects the growth of his fish. Select all of the constants he should have in his experiment.

• Amount of food he feeds the fish

• Temperature of the water

• Growth of the fish

• Amount of water in the tanks

• Type/size of fish tanks

Tags

NGSS.MS-LS1-5

Ryan wants to test if the temperature of his fish tanks affects the growth of his fish. Select the independent variable.

• Amount of food he feeds the fish

• Temperature of the water

• Growth of the fish

• Amount of water in the tanks

• Type/size of fish tanks

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Ryan wants to test if the temperature of his fish tanks affects the growth of his fish. Select the dependent variable.

• Amount of food he feeds the fish

• Temperature of the water

• Growth of the fish

• Amount of water in the tanks

• Type/size of fish tanks

Tags

NGSS.MS-LS1-5

A student wants to test if adding fertilizer to a plant will cause it to grow more than the plant without fertilizer. Select all of the constants they should keep in the experiment.

• Amount of water

• Amount of soil

• Amount of fertilizer

• Amount of light

• Growth of the plants

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The purpose of a controlled experiment is to isolate and test...

• Many data

• A conclusion

• Several variables

• One variable

What is a control group?

• An experiment where you don't change any variables.

• An experiment where you change one variable.

• An experiment where you change many variables.

• An experiment where data is collected.

Which statement describes the difference between an independent and dependent variable?

• The dependent variable does not change, and the independent variable does change.

• The independent variable does not change, and the dependent variable does change.

• The independent variable is the one you are testing, and the dependent variable is a result of that change.

• The dependent variable is the control, and the independent variable stays the same.

How many independent variables should you test at a time?

• One

• Two

• Three

• As many as you want

Tags

NGSS.MS-PS2-2

In a controlled experiment...

• A variable is not needed

• A control group is compared to an experimental group

• All factors should be the same

• There are only 2 variables

Marshall wants to test which type of vacuum works best on his dirty carpet. What is the best way for him to test the two vacuums?

• Divide the room in half with a colored piece of tape. Vacuum one side of the room with one vacuum and the other side with the other vacuum. Whichever vacuum has more dirt in it when he is done is the better vacuum.

• Vacuum the living room with one vacuum and the kitchen with the other vacuum. Whichever vacuum has more dirt in it when he is done is the better vacuum.

• One week he should vacuum with one vacuum, then the next week he should vacuum with the other. Whichever vacuum has more dirt in it when he is done is the better vacuum.

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3