Question

What would the controlled variables be for this science question: how does the volume of water affect the density of water?

Answer 1

Control variable is something that remains unchanged.

Answer 2

So, anything that you WOULDN'T change is your control.

Answer 3

Yes, I know but what would the controlled variables be?

Answer 4

Think about it. If you want to measure the volume of water, what are somethings that may remain unchanged? HINT: water is NOT a control substance since the volume keeps changing.

Answer 5

I already have the temperature of the water and the type of water but I need three and I can't think of the other.

Answer 6

temperature may not be a controlled variable, since temperature is inversely proportionate to it's volume.

Answer 7

Well, I thought that because the temperature of H2O effects the density

Answer 8

Well, how about beaker size?

Answer 9

yeah but I feel that that has more to do with the volume of water which is the independent variable

Answer 10

Not really. If you put in 0.3 L of water in a 300 mL beaker, or in a 500 mL beaker, its still going to be 0.3 L of water no matter what.

Answer 11

true. Thanks!

Answer 12

"temperature is inversely proportionate to it's volume." This is only true when T \(<4^oC\)