| A | B |
| astronomer | scientists who study planets and other space objects |
| compass rose | part of a map that shows major compass directions |
| oceanography | study of the earth's oceans |
| geology | study of the solid parts of the Earth |
| earth science | study of the earth's land, water, air and outer space |
| meteorology | study of the earth's air and water |
| legend | list of map symbols and their meanings |
| map | drawing that shows part of the earth's surface as seen from above |
| submersible | small underwater research vessel |
| meteorologist | scientist who studies the air and weather |
| scale | part of a map shows the relationship between map distance and actual distance |
| hydrosphere | liquid portion of the earth |
| lithosphere | solid portion of the earth |
| atmosphere | gas portion of the earth |