When people think of geology, they usually think of rocks and fossils. However, geology is actually a very broad field of study. Geologists' knowledge extends from rocks and fossils to the moon and other planets (Hammonds 7-8). Geologists use a variety of subjects in their work, but science and mathematics are the most important. Some of the sciences studied by geologists are physics and chemistry (12). English is also a subject that geologists use when communicating with other scientists, the media, and the public (12) . Because of these tasks, it is important for geologists to have in-depth knowledge of these different topics. Besides these topics, there are some things every geologist should know. Most of these things are laws and rules about what the Earth is made of and how it works. These include the chemical compositions, structures, and properties of a substance (jobs.virginia.gov Capabilities 1). Knowing magnetic, electric and gravitational forces is also essential (JIST 60). Geologists must know the methods of describing relief, the sea and air masses (1). This is useful when working in the field. Geologists can better describe what they see and present it to others more clearly. As with anything, knowing the history of the study is also important. Geologists must know historical events, their causes, indicators and impact (1). The field of geology has many different branches. Some of these areas have virtually nothing in common. The one thing they all include, however, is that each focuses on a part of Earth, its composition, or that of other planets. Mineralogy, the study of minerals above the Earth and in its crust, is different from petrology, the field of paper scientists in general. The median for project geologists is just over $80,000 (1). Geologists in the United States earn an average of $65,000. In the United States, project geologists earn approximately $80,000 (1). Geologists working in South America are also well paid (1). Their salaries rival those of senior geologists in the United States and Canada. (1) Geology is a great profession because it has many fields and branches. There is something for everything that interests you about the Earth and/or its history. Geologists get to travel to cool places and see cool things. They get paid to spend time in remote and beautiful places. They are not stuck in one place, as they work in the field, in the laboratory and in the office. Being a geologist involves a lot of work and responsibility, but there are so many rewarding aspects that it's definitely worth it..