The nails are left in the liquids until a change is observed. Solution levels in each beaker are kept constant. Which is the dependent variable in this investigation?
Responses
the nails
the nails
the types of water
the types of water
the amount of rust
the amount of rust
the different containers
the amount of rust
Which aquatic environment supports the least number of species?
Responses
Fresh water
Fresh water
Brackish water
Brackish water
Seawater
Seawater
Salt lakes
Salt lakes
Based on the graph, approximately how many calories did the student consume in bread and pasta?
Responses
50
50
500
500
750
750
1500
1500
750
The dependent variable in this investigation refers to the variable that is measured or observed and is affected by the independent variable. In this case, the independent variable is likely the types of water used.
To determine the dependent variable, we need to consider what is being measured or observed as the possible changes occur. In this investigation, the dependent variable is the amount of rust. The nails are left in the liquids until a change is observed, and the change being observed is the amount of rust on the nails.
Therefore, the dependent variable in this investigation is the amount of rust.