1. Fahrenheit (oF) - Temperature scale on which water freezes at 32 oF and water boils at 212 oF. The conversion between the Fahrenheit temperature scale (F) and the Celsius temperature scale (C) is: F=32+1.8xC
2. Atmosphere - The gaseous or air portion of the physical environment that encircles a planet. In the case of the earth, it is held more or less near the surface by the earth's gravitational attraction. The divisions of the atmosphere include the troposphere, the stratosphere, the mesosphere, the ionosphere, and the exosphere.
3. Weather- The state of the atmosphere at a specific time and with respect to its effect on life and human activities. It is the short term variations of the atmosphere, as opposed to the long term, or climatic, changes.
4. Barometer - An instrument used to measure atmospheric pressure. Two examples are the aneroid barometer and the mercurial barometer.
5, Current- A horizontal movement of water, such as the Gulf Stream off the east coast of North America, or air, such as the jet stream.
