Download Climate Factors

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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.