Movement
Fronts are generally guided by winds aloft, but do not move as quickly. Cold fronts and occluded fronts in the Northern Hemisphere usually travel from the northwest to southeast, while warm fronts move more poleward with time. In the Northern Hemisphere a warm front moves from southwest to northeast. In the Southern Hemisphere, the reverse is true; a cold front usually moves from southwest to northeast, and a warm front moves from northwest to southeast. Movement is largely caused by the pressure gradient force (horizontal differences in atmospheric pressure) and the Coriolis effect, which is caused by Earth's spinning about its axis. Frontal zones can be slowed down by geographic features like mountains and large bodies of warm water.
Read more about this topic: Weather Fronts
Famous quotes containing the word movement:
“The director is simply the audience. So the terrible burden of the director is to take the place of that yawning vacuum, to be the audience and to select from what happens during the day which movement shall be a disaster and which a gala night. His job is to preside over accidents.”
—Orson Welles (1915–1984)
“What stunned me was the regular assertion that feminists were “anti-family.” . . . It was motherhood that got me into the movement in the first place. I became an activist after recognizing how excruciatingly personal the political was to me and my sons. It was the women’s movement that put self-esteem back into “just a housewife,” rescuing our intelligence from the junk pile of “instinct” and making it human, deliberate, powerful.”
—Mary Kay Blakely (20th century)
“Women, because of their colonial relationship to men, have to fight for their own independence. This fight for our own independence will lead to the growth and development of the revolutionary movement in this country. Only the independent woman can be truly effective in the larger revolutionary struggle.”
—Women’s Liberation Workshop, Students for a Democratic Society, Radical political/social activist organization. “Liberation of Women,” in New Left Notes (July 10, 1967)