Which of the following is an example of density?

A. Ice floating on top of a river
B. Convection currents that cause wind
C. Oil spill cleanup
D. All of the above

Pls help Idk this..

me neither

To determine which of the given options is an example of density, we need to understand what density is.

Density is a measure of how closely packed the particles of a substance are. It is calculated by dividing the mass of an object by its volume. In simpler terms, density is the amount of matter or mass within a given volume.

Now, let's examine each option and see if it represents an example of density:

A. Ice floating on top of a river: This option demonstrates density. Ice floats on water because it is less dense than water. When water freezes, its particles spread apart, occupying more space and making it less dense than liquid water.

B. Convection currents that cause wind: This option does not directly relate to density. Convection currents are the transfer of heat through a fluid, such as the atmosphere. While density variations in the air play a role in the formation of convection currents, the option itself does not specifically demonstrate density.

C. Oil spill cleanup: This option does not directly relate to density. Oil spill cleanup typically involves techniques such as containment, skimming, and chemical dispersants. While density differences between oil and water can be utilized in some cleanup methods, the option itself does not directly represent density.

D. All of the above: Since option D includes both A (ice floating on top of a river) and C (oil spill cleanup), which were identified as not directly related to density, we can conclude that option D is not the correct answer.

Therefore, the correct answer to the question is:

A. Ice floating on top of a river