Search results
Results from the WOW.Com Content Network
This work has been released into the public domain by its author, CIA.This applies worldwide. In some countries this may not be legally possible; if so: CIA grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Temperature differences can cause air currents because warmer air is less dense than cooler air, causing the warmer air to appear "lighter." Thus, if the warm air is under the cool air, air currents will form as they exchange places. Air currents are caused because of the uneven heating of Earth's surface. [5] [6]
This page was last edited on 26 November 2022, at 23:40 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes. Maps using isotherms show temperature gradients, [2] which can help locate weather fronts. Isotach maps, analyzing lines of equal wind speed, [3] on a constant pressure surface of 300 or 250 hPa show where the jet stream is located.
Image of world map with WMD hazard symbols superimposed on it. Created in Inkscape by User:Fastfission (credit: "Wikimedia Commons") using the following images: *Image:Skull and crossbones.svg (PD-self) *Image:Radiation warning symbol.svg: 14:01, 30 August 2006: 1,297 × 601 (273 KB) Fastfission~commonswiki
The rising air creates a low pressure zone near the equator. As the air moves poleward, it cools, becomes denser, and descends at about the 30th parallel, creating a high-pressure area. The descended air then travels toward the equator along the surface, replacing the air that rose from the equatorial zone, closing the loop of the Hadley cell. [3]
This template is used to display a clickable world map to help users navigate a large list of countries by continent. Include the following where you want the map to appear: {{world image map}} The image map assumes that in-page links to all the continents exist, e.g., #Africa, and in some cases, individual countries, e.g., #Canada.
This is a list of outlines of present-day nations, states, and dependencies. Countries are listed in bold under their respective pages, whereas territories and dependencies are not. Disputed and unrecognized countries are italicized.