Volume is a measure of the amount of space an object takes up. It is always in three dimensions. To find the volume of an objects like a cube or a box, measure the length × width × height. If measured ...

Plot a graph of mass in g on the y-axis against volume in cm 3 on the x-axis. Draw a line of best fit through the points. The gradient of the graph = \(\frac{mass}{volume}\) = density of water.

Again, this is just the energy stored per unit mass. The rubber band has a mass of 1.09 grams. ... After measuring the dimensions and calculating the volume, I get an energy density of 6.4 MJ/m 3.

In the animation, you saw that as water is cooled the water level goes down. Cold water has a smaller volume, but the mass stays the same. What does this tell you about the density of cold water?