| A | B |
|---|
| isobar | a line that connects points of equal atmospheric pressure |
| isohyet | connects points of equal percipitation |
| isopleth | a line on a map that connects points of equal value |
| isotherm | connects points of equal pressure |
| latent heat of condensation | energy release in the form of heat, as water is converted form the gaseous (vapor) to liquid state |
| longitude | angular distance ( distance measured in degrees) east or west of the prime meridian |
| maritime | the moderating influence of water bodies on climate |
| melting | solid to liquid |
| meridian | a line of longitude that forms half of a great circle of the globe and connects all points of equal longitude; all meridians connect the north and south poles |
| natural resources | any element, material or organism existing in nature that may be useful to humans |
| north pole | 90 degrees north |
| south pole | 90 degrees south |
| ozone layer | a protective layer of ozone molecules found primarily in the stratosphere |
| parallel | circle on the globe connecting all points of equal latitude |
| parallelism | tendency of earth’s polar axis to remain parallel to itself at all positions in its obit around the sun |
| perihelion | position of earth at closest distance to sun during each earth revolution, Jan 3 |
| photosynthesis | the process by whish carbohydrates (sugars and starches) are manufactured in plant cells; requires carbon dioxide, water, light, and chlorophyll |
| plane of the ecliptic | plane that is constantly bisecting both the earth and the sun |
| prime meridian | 0 degrees longitude |
| radiation | emission of electromagnetic wave energy through space |
