00:02
All right, it looks like we are describing experiments as an object as floating in water.
00:07
How does the mass of the object affect the volume of water it displaces? so it says choose one of the quantities to vary, and that's going to be your independent variable.
00:14
So it looks here like they selected the weight of the object to be the independent variable.
00:19
And then the quantity that they're observing, which is the dependent variable, would be the volume of water that gets displaced.
00:27
And then our constant, of course, is going to be the water.
00:30
So the level of water that you are using, the type of water that you're using, et cetera.
00:37
So it says choose one of the following experimental questions of this lab or make up your own based on the topics discussed in the pre -lab.
00:43
If an object's floating in water, how does the mass of the object affect the volume of water displaces? how does the volume of salt water displace by a particular object depend on the concentration of salt in the water? how is the density of a fluid affect the volume displaced by a particular object placed in the fluid? so again, you could have one test tube set up like so and have a predetermined amount of water in that graduated cylinder.
01:16
And then you could have your various objects ready to go.
01:21
Now, with those objects, because you don't want any other factors to play a part of this, you'd want them all to be the same size and the same shape.
01:32
The only thing that should be different about them if we're only testing the weight of the object would be their masses.
01:38
Okay, so they should all be the same size and they should all be the same shape.
01:44
And the only difference between them is some should be heavier than others.
01:48
So that would be the best way to test this out.
01:51
Then we come down here.
01:52
It says, if an object is floating in water, how does the mass of the object affect the volume of the water? it displaces.
01:57
Well, you would find that out as you do this experiment...