Mr. J. McKinnon
L for ______________
O for ______________
W for ______________
E for ______________
R for ______________
Near ______________
The earth's _________ causes the sun's energy to be less
____________ at the poles than near the ________. Places
closer to the equator are _________ than places further north or south. Warmer air can hold
more _________ than colder air; therefore, areas _______ away from the equator are
_______ than areas closer to the equator.
Ocean Currents
An ocean current (like a _______ within the ocean water) can be warmer or cooler than the
water around it. Air above the water is affected by the __________ of the water as it passes
over. The west coast has a warm ocean current called the _______________. Brings warm,
moist air to the Pacific coastal areas. The cold __________ flows from the north along the
coast of Labrador. The warm _________ flows from the south along Nova Scotia and
Newfoundland. Where they meet, _____ is created.
Air Mass
Cold to very cold
Winds and Air Masses
Continental Arctic
An air mass is a large volume of
Continental Tropic
air that has the _________ and
____________ of the location
where it was formed. If it formed Maritime Tropic
over an ______, it's wet. If it
Maritime Polar
Cool to cold
formed over _______, it's dry. If
it formed in the _______, it's cold. If it formed in the _______, it's warm. Winds blow these
air masses from one location to another. In Canada, most of our winds (the _________
winds) come from the west. They are called the "_________". The Westerlies are controlled
by the _________ (a current of fast-moving air high in the atmosphere). North of the jet
stream it is colder than south of the it. In the summer, the jet stream moves _________, so
we get warmer weather. In the winter, the jet stream moves further ________ and we get
colder weather.
Elevation is the _______ the land is above sea level. As air rises, it ___________ due to the
decrease in air pressure. As air expands, it _______. Since colder air cannot hold as much
moisture (water vapour) as warmer air, when the air cools, the water vapour condenses into
liquid water droplets. Once the droplets are big enough, they will fall as _____ or _______,
depending on the __________. Summary: Areas lower in _______ tend to be warmer than
areas higher in elevation. This factor is not dependent on how the land is shaped. An area of
flat land at a higher elevation is colder than an area of flat land at lower elevation.
As air is forced over ___________ barriers, it cools and creates ___________.
Near Water
Areas that are close to water have their climate _______ by the water so that the summer
temperature are not as hot and the winter temperatures are not as cold. Creates _________
climates near water and __________ climates away from water.
Which of the above factors do you think affect the climate of Whitby?