| A | B |
|---|
| Humidity | amount of water vapor in air |
| Atmosphere | the earth's air |
| Troposphere | layer of air where weather occurs |
| Air Pressure | push of the air |
| Air Mass | body of air with same temp. & humidity |
| Front | leading edge of air mass |
| Cold Front | leading edge of cold air mass |
| Warm Front | leading edge of warm air mass |
| Stationary Front | two fronts lock together |
| Hydrosphere | water on earth and in the air |
| Salinity | amount of salt in the water |
| Water Pressure | force caused by weight of water above |
| Wave | surface water movement caused by wind |
| Tide | slow change in water level |
| Current | river of water moving through the ocean |
| Sonar | system used to find or map underwater |
| Thermal Vents | fountains of hot water on the ocean floor |
