Which term describes a layering where deeper layers are denser than those above?

Which term describes a layering where deeper layers are denser than those above?

• A. Convection Current
• B. Crust
• C. Earthquake
• D. Density Stratified

Answer: (D)

This is about how layers arrange themselves by density. When deeper layers are denser than the layers above, the arrangement is stable and is described as density stratification. Gravity keeps the heavier material below lighter material, so the system tends to resist mixing unless external forces overcome the density differences. In oceans and atmospheres, this creates distinct layers and limits vertical movement, with sharp density changes marking boundaries. The other terms don’t describe how layers are arranged by density: a convection current refers to the movement caused by density differences, not the static layering pattern; the crust is a solid outer shell; and an earthquake is a seismic event. So the best description of this layering is density stratification.

This is about how layers arrange themselves by density. When deeper layers are denser than the layers above, the arrangement is stable and is described as density stratification. Gravity keeps the heavier material below lighter material, so the system tends to resist mixing unless external forces overcome the density differences. In oceans and atmospheres, this creates distinct layers and limits vertical movement, with sharp density changes marking boundaries. The other terms don’t describe how layers are arranged by density: a convection current refers to the movement caused by density differences, not the static layering pattern; the crust is a solid outer shell; and an earthquake is a seismic event. So the best description of this layering is density stratification.