Warmer fluids take up __ space, thus decreasing the density. more less the same amount of

## Step 1<br />The problem is about the concept of fluid density and how it changes with temperature. The density of a fluid is defined as the mass of the fluid divided by its volume. <br /><br />## Step 2<br />When a fluid is heated, the kinetic energy of its molecules increases. This causes the molecules to move faster and spread out, which increases the volume of the fluid.<br /><br />## Step 3<br />Since the mass of the fluid remains constant, but the volume increases, the density of the fluid decreases. This is because the same mass is now spread out over a larger volume.<br /><br />## Step 4<br />Therefore, warmer fluids take up more space, which leads to a decrease in density.