Imagine a leaf floating down the river. Present in the image is a leaf, water, and rocks. Which of these objects has the most density: the lead, the water in the river, or the rocks at the bottom of the river? Put the 3 objects in order starting with the least dense object at the top and finishing with the most dense object at the bottom.

1 answer

To arrange the objects by density from least dense to most dense, we can consider the typical densities of each:

  1. Leaf - Leaves are generally less dense than water, which is why they float.
  2. Water - The density of water is about 1 gram per cubic centimeter (g/cm³) at standard conditions.
  3. Rocks - Most common rocks, such as granite or basalt, have a density of around 2.5 to 3 g/cm³, making them denser than both the leaf and the water.

So, in order from least dense to most dense, the list is:

  1. Leaf
  2. Water
  3. Rocks