Points to Remember. 1  Marijuana refers to the dried leaves, flowers, stems, and seeds from the hemp plant, Cannabis sativa. 2  The plant contains the mind-altering chemical delta-9-tetrahydrocannabinol (THC) and other related compounds. 3  People use marijuana by smoking, eating, drinking, and inhaling it.
A cold front is symbolized on a weather map as a line with triangles. The triangles can be thought of as icicles. Cold fronts are often coloured blue. The presence of a cold front means that cold air is advancing and pushing underneath warmer air.
Figure 2 - Side View of a Typical Cold Front: Cold Fronts: Cold front- a front in which cold air is replacing warm air at the surface. Some of the characteristics of cold fronts include the following: The slope of a typical cold front is 1:100 (vertical to horizontal). Cold fronts tend to move faster than all other types of fronts. Cold fronts tend to be associated with the most violent weather among all types of fronts. Cold fronts tend to move the farthest while maintaining their intensity.