Global and Local Winds Created by sfalwell Permission granted for teachers to use if they include a link to http://comelearnmore.com/
R27 Global and Local Winds • Uneven heating of the earth • Direct sunlight at the equator, angled sunlight spreads out the energy • Warm air rises and cold air sinks b/c differences in density and air pressure • 30 • Convection currents that affect a smaller area • What causes wind? • Why is the equator hotter than the poles? • What is a convection current? • How many degrees latitude to get a wind belt? • Local Winds =
L27 Sea Breezes & Land Breezes Set up Interactive Notebook Top Half for Sea Breeze picture Bottom Half for Land Breeze picture
Sea Breeze Picture will go here Land Breeze Picture will go here
Animation of Land & Sea Breezehttp://www.classzone.com/books/earth_science/terc/content/visualizations/es1903/es1903page01.cfm Annotating Text Origin of Wind from NOAAhttp://www.srh.noaa.gov/jetstream/synoptic/wind.htm
Questions for after annotating text 1. What is wind? • A wind vane measures_______________________________________. • An anemometer measures ___________________________________. • When air rises it _______, and when air sinks it ______. That is why rising air can produce clouds and sinking air often produces fair weather. • Isobars are lines drawn on a map to indicate _____________________. • What is a pressure gradient? • Which direction does air move? a) from high to low pressure b) from low to high pressure • The ___________ ____________ refers to the way the Earth’s rotation affects the direction wind flows. • Objects in the northern hemisphere turn to the ___________ and objects in the southern hemisphere turn to the ___________. • Winds are said to be diverging from areas of high pressure and convergingin areas of low pressure. What does that mean? • Warm air can hold __________ (more or less?) water vapor than cold air.