What are midlatitude cyclones?
What will be an ideal response?
Answer: Much less intense than hurricanes, but more common, midlatitude cyclones are centers of low pressure that develop along the polar front. They move from west to east along that front, following the general circulation in the midlatitudes.
With air drawn toward the center of low pressure from both the warm and the cold sides of the polar front, the warm air is drawn toward cold, typically on the eastern side of the storm, a warm front develops. On the western side, the spiraling motion causes cold air to drive under the warm air, forming a cold front. As the center of low pressure moves eastward, these fronts move with it, bringing rainfall to areas over which they pass. Changes of temperature, precipitation, and shifting winds usually mark the passage of a front at the surface. Occasionally, especially in North America, strong cold fronts associated with midlatitude cyclones produce tornadoes.
You might also like to view...
What causes a geostrophic wind and what are the important characteristics of geostrophic wind?
What will be an ideal response?
Benjamin Franklin helped develop trend forecasting
Indicate whether the statement is true or false
A geologist is working in an area of old volcanic rocks exposed by erosion. He finds a large rock outcrop that contains flat lying gravels in the base of the outcrop
These gravels are overlain by basalt that forms a series of layers representing flows. The uppermost basalt lava flows have a dip of about 10 degrees to the west. What does this outcrop record? A) Gravels were initially deposited in a river valley and a cinder cone was erupted, damming the valley, before a cinder cone formed. B) Basalt flows formed after gravels were deposited, covered the local terrain, and built a shield volcano with dips of about 10 degrees. C) Basalt flows formed above a series of gravels, filling a river valley. D) You can't tell anything about the history of this region from this outcrop.
What is an example of authigenic sediment?
a. Quartz sand b. Phosphorite deposits c. Volcanic dust d. Diatomaceous ooze e. Tektite spheres