Independent variable, dependent variable and constants

What is an independent variable?

• A variable being tested in an experiment (it is changed on purpose)

• A variable that changes because of another variable that was changed

• A variable that is kept the same in an experiment

Tags

NGSS.MS-PS2-2

The factors in an experiment that must remain the same in order to isolate the independent variable.

• Testable questions

• constant

• Test subjects

• Control

• dependent variable

Tags

NGSS.MS-PS2-2

• the same goldfish

• amount of fish food eaten

• the brand of fish food

• none of these are an INDEPENDENT variable

Tags

NGSS.MS-ETS1-2

This is an educated guess of what will happen.

• hypothesis

• testable question

• theory

• law

Tags

NGSS.MS-PS1-2

Which is the correct sentence that you should use for writing the IV and DV in a hypothesis format?

• If the IV ______, then the DV will _______

• What is the effect of the IV on the DV?

• The effect of the IV on the DV is ____

• none of these are correct.

• The distance of each plane's flight

• the type of paper used

• how hard the plane is thrown

• the model of paper airplane

Tags

NGSS.MS-PS2-2

• Color of chair

• grade on test

• age of students

• which subject he liked the most

This variable in an experiment is the one being deliberately changed by the scientist

• dependent variable

• control group

• independent variable

• constant

Molly investigated if the age of students caused them to be better drivers. What is the dependent variable?

• Type of car

• Age of student

• skill of driving

• number of speeding tickets

The higher the temperature of water, the faster the egg will cook. Select the independent variable.

• egg cooking time

• temperature of water

• type of egg

• how the egg is cooked

Tags

NGSS.MS-PS3-5