List and define the physical properties used to identify minerals
What will be an ideal response?
Luster describes how mineral surfaces reflect light. Crystal faces are flat, smooth surfaces on mineral exteriors with regular geometric forms. Density is the measure of the mass of a material divided by its volume. Hardness is the resistance to scratching on a smooth surface. Cleavage describes planes along which a mineral breaks and the shape of the resulting fragments. Streak is the color of the residue remaining from scratching a mineral on a non-glazed porcelain plate. Color results from the interaction of light with the mineral.
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This method of soil cultivation reduces soil erosion and runoff
A) swidden farming B) multi-cropping C) short fallow D) conservation tillage E) truck farming
The primary sources of the acidity in acid rain are the gases ________
A) SO2 and NOx B) O3 and VOCs C) NOx and N2O D) H2SO4 and NO E) O3 and SO2
Nearly all types of minerals are beautiful and valuable. Indicate whether the statement is true or false
________ soils are common in the western United States
A) Forest B) Rainforest C) Grassland D) Desert E) Wetland