1.  METEOROLOGY - scientific study of Earth's weather
2.  METEOROLOGIST - person who studies the effects of Earth's weather
3.  TEMPERATURE - how hot or cold the air is
4.  HUMIDITY - the amount of water vapor in the air
5.  WIND DIRECTION - the compass direction from which the wind is coming
6.  WIND SPEED - How fast the air is moving past a measuring point
7.  PRESSURE - the force of the air pushing in all directions
8.  VISIBILITY - the distance one can see through the air
9. THERMOMETER - measures temperature in degrees
10. BAROMETER - measures air pressure in millibars (mb)
11. HYGROMETER - measures humidity in percentages (%)
12. ANEMOMETER - measures wind speed in miles per hour (mph)
13. WIND VANE - measures wind direction (N,S,E,W)
14.  COMPRESSED - air that is forced into a smaller space
15.  MASS - the amount of matter in an object
16.  WEIGHT - pull or force between Earth and the matter in an object or substance
17.  REVOLVE-movement of one object around another, Earth revolves around the sun...365 1/4 days
18.  ROTATION-spinning like a top, this is how Earth turns...24hrs
19.  NORTH STAR-Earths tilt always points towards the North Star...23.5 degrees
20.  EQUINOX-equal day, equal night
                Spring/Vernal-around March 21
                Fall/Autumnal-around September 21
21.  SUMMER SOLSTICE-longest day of the year...June 21
22.  WINTER SOLSTICE-shortest day of the year...December 21
23.  SOLAR ANGLE-the angle at which light strikes a surface
24.  BEAM SPREADING-the way a light beam covers a larger area when it hits a surface
25.  RADIANT ENERGY-travels as waves through space
26.  RADIATION-can be visible like light, or invisible like x-ray, etc.  Absorbing radiant energy is one way energy transfers
27.  DIFFERENTIAL HEATING-different materials heat up at different rates
28.  CONDUCTION-heat can transfer between molecules when contact is made
29.  RERADIATION-the way heat energy can enter the atmosphere
30.  DENSITY-amount of matter in a volume of material
31.  CONVECTION-warm air expands and rises because it is less dense, at higher elevations, the air cools, contracts and becomes more dense and falls back to earth...this cycle is called a convection cell
32.  CONDENSATION-water changing from a gas to a liquid
33.  EVAPORATION-liquid water becomes a gas called water vapor
34.  HUMIDITY-water vapor in the air
35.  HUMID-a lot of water vapor in the air
36.  SATURATED-when air holds as much water vapor as it can
37.  RELATIVE HUMIDITY-compares the amount of water vapor in the air to the amount of water vapor needed to saturate the air
38.  DEW POINT-temperature at which water changes from a gas to a liquid--temperature at which the air is saturated
Last modified: Monday, 19 November 2012, 11:06 AM