Benny and alice are describing the property of which is often used to identify specific mineral families. a) streak b) hardness c) cleavage d) specific gravity

Benny and Alice are describing the property of hardness, which is often used to identify specific mineral families.

Explanation:

The properties like streak, cleavage, luster, specific gravity, crystal habit, fracture, and color that of minerals do not make specific families of minerals based on that particular property. On the other hand, the hardness of the minerals is used to identify them with their families depending on how hard the mineral is. The metallic minerals are usually harder than rocky minerals.

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust.