Name: ________________________ TLS WORKSHEET 1-16 Catching on to Climate: Climate Factors in Canada REPRODUCIBLE OVERHEADS FOR TEACHER USE ONLY The following 8 overheads are supplied for teaching Lesson 12 on factors that influence climate in Canada. TLS Worksheet 1-17: Catching on to Climate: Climate Factors in Canada is a worksheet for students based on this lesson. Overheads Supplied: LEAP NOL Introductory Visual LEAP NOL Memory Aid Chart Climate Factor: Latitude Climate Factor: Elevation and Air Masses Climate Factor: Prevailing Winds Climate Factor: Nearness to Water Climate Factor: Ocean Currents Climate Factor: Landforms Copyright © 2006, McGraw-Hill Ryerson Limited.. LEAP NOL! Copyright © 2006, McGraw-Hill Ryerson Limited. Lots of information can be difficult to remember. Sometimes it helps to develop an acronym or other memory aid. Factors Affecting Climate in Canada: Remember LEAP NOL! L Latitude E Elevation A Air Masses P Prevailing winds N Nearness to water O Ocean currents L Landforms Remember . . . Learn Everything About Not Landing ! Only Parachuting Copyright © 2006, McGraw-Hill Ryerson Limited. LATITUDE Usually the further north you go the colder the climate gets. This is because the Sun’s rays are spread over a wider area at the poles than nearer the equator. As a result, the energy (heat and light) is less concentrated. Copyright © 2006, McGraw-Hill Ryerson Limited.. ELEVATION AIR MASSES Copyright © 2006, McGraw-Hill Ryerson Limited.. PREVAILING WINDS In Canada, most wind begins in the west and blows east across to the Atlantic coast. These winds bring air masses across Canada. Copyright © 2006, McGraw-Hill Ryerson Limited. NEARNESS TO WATER Lakes and oceans change their temperature more slowly than the land around them. In the early summer, as the land warms up, the lake is still too cold for swimming. In the winter, there is snow on the ground, but the lake has not frozen over yet. Early Winter: Snow on the ground, but the lake is not yet frozen. Early Spring: Spring flowers bloom, but there is still ice on the lake in places. As an air mass travels over a large body of water it absorbs moisture. When that same air mass passes over land, the moisture may be released as precipitation (rain or snow). As a result, areas closer to bodies of water usually receive more precipitation than areas farther away from water. Copyright © 2006, McGraw-Hill Ryerson Limited. OCEAN CURRENTS Currents bring warm or cold air nearer the shore. The air then affects the climate. Two of the currents that affect Canada’s climate are: • Labrador Current (cold) • Gulf Stream Current (warm) Copyright © 2006, McGraw-Hill Ryerson Limited. LANDFORMS The shape of a landform (mountain, lowland or shield) may work with any of the other climate factors to create a wet or dry, cool or warm climate. Before an air mass goes over a mountain it will cool down and release its moisture. This makes one side of the mountain wetter than the other side. ` Copyright © 2006, McGraw-Hill Ryerson Limited.