If you want to get an entry-level job as a geologist, you need to pursue a bachelor's degree in geology or environmental science. You need a strong knowledge of physics, math, and physical science. Many geologists use geographic information systems (GIS) and global positioning systems (GPS) to fulfill their duties, so you must be familiar with these technologies. If you work in a specific industry, such as petroleum, mining, or city planning, you need a basic understanding of the policies, procedures, and regulations associated with the field. Additional qualifications include researching skills and excellent communication abilities.