Geologists study Earth materials, the processes that shape Earth's surface, and the events that sometimes make Earth hazardous to humans.
Geologists also study Earth's long history including the history of life.
Geologic knowledge allows geologists to predict the location of natural resources such as oil and natural gas, the probability of natural hazards in a specific location, and the results of human impacts on Earth processes. Geology is one of the most interesting of all the physical sciences. It is also one of the most practical. Prentice Hall, 9th Edition, Englewood Cliffs, New Jersey. I will tell you how the rest of the class did after each exam.