Independent Variable and Control Group

This part of the experiment gives the scientist something to compare the independent variable to; It is the normal or natural condition that does not receive the variable being tested.

• experimental group

• control group

• data

• variables

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

• dependent variable
• independent variable
• data
• control group

How many variables do we want to test/change during a controlled experiment?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS2-2

A custodian notices some dirty tables and wants to know which cleaner is the best to use. He tests three different cleaners and looks at how well they clean compared to tap water. What is the independent variable?

• type of cleaner

• tap water

• cleanliness of the tables

Steve wanted to see if different types of fertilizer influence sunflower growth. What is the independent variable?

• type of fertilizer

• sunflower grown without fertilizer

• height of the sunflowers

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A custodian notices some dirty tables and wants to know which cleaner is the best to use. He tests three different cleaners and looks at how well they clean compared to tap water. What is the control group?

• type of cleaner

• tap water

• cleanliness of the table

Steve wanted to see if different types of fertilizer influence sunflower growth. What would be the best control group?

• type of fertilizer

• sunflower grown without fertilizer

• height of the sunflowers

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Steve wanted to see if different types of fertilizer influence sunflower growth. What would be the best dependent variable?

• type of fertilizer

• sunflower grown without fertilizer

• height of the sunflowers

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A custodian notices some dirty tables and wants to know which cleaner is the best to use. He tests three different cleaners and looks at how well they clean compared to tap water. What is the dependent variable?

• type of cleaner

• tap water

• cleanliness of the table

Tags

NGSS.MS-ETS1-3

NGSS.MS-PS1-2