Transcript Weather vs. Climate

Weather vs. Climate
“Weather tells you what to wear each day,
but the climate helps you figure out what should be in your closet”
Weather vs. Climate
Weather:
• Determines what
clothes we wear
• Changes over
minutes, hours, days
• Thunderstorm,
blizzard, hurricane,
drought, heat wave,
cold snap
Climate:
• Determines what
crops we plant; when
we plant, when we
harvest
• Changes over
seasons-decadescenturies
• Persistent (decades
long) heat-wave or
drought
Weather: the condition of Earth’s atmosphere at a particular
time and place
Weather
Predicting Weather
• http://www.weatherwizkids.com/weatherforecasting.htm
• Click and Color Weather Station Symbols
Meteorologist: Scientists who study the causes of weather and
try to predict it.
The Jet Stream
•
Jet streams are relatively narrow bands of strong wind in the upper levels of the
atmosphere. The winds blows from west to east in jet streams but the flow often
shifts to the north and south. Jet streams follow the boundaries between hot and
cold air. Since these hot and cold air boundaries are most pronounced in winter, jet
streams are the strongest for both the northern and southern hemisphere winters.
World Climate Map
• http://www.eduplace.com/ss/maps/pdf/world_cl
im.pdf
Map
1. Draw Polar and Subtropical Jet Stream
2. Color Map according to Legend
Tropical – yellow
Dry – brown
Warm – red
Cool – blue
Polar – green
Highland -orange
Air pressure: the result of the weight of a column of air pushing
down on and area.
Pressure: the force
pushing on an area or
a surface
Barometer: an instrument that is used to measure changes in air
pressure
Water
Cycle
Dew point: the temperature at which condensation occurs. This is
when clouds form.
Humidity: a measure of the amount of water vapor in the air.
Clouds
Cirrus: wispy, feathery,
formed at high levels and
made of ice crystals
Cumulus: fluffy, and
usually indicate fair
weather.
Stratus: form in
flat layers and
usually cover most
of the sky. Can
produce rain.
Clouds
Flash flood: a sudden violent flood that occurs within a few hours or
minutes of a storm.
Storm surge: a dome of water that sweeps across the coast where
a hurricane lands.
Hurricanes
Global winds: winds that blow steadily from specific directions
over long distances.
Wind
Wind Chill Factor: increased cooling that wind can cause.
Air mass: a huge body of air that has similar temperature,
humidity and air pressure throughout.
Aim masses can be warm
or cold and humid or dry.
As an air mass moves
into an area, it changes the
weather there.
View satellite movies of air
masses moving across North
America.
equatorial, tropical, polar or arctic.
continental or maritime
Front: the area where the air masses meet and do not mix
Compare and contrast warm and cold fronts.
Types of fronts:
Cold: starts with rain, ends in cold dry air
Warm: first storms, rain then warm and humid
Stationary: can have days of rain
Occluded: ground temperature is cold and
it can make clouds and rain because of the warm
front
Coriolis effect: The way Earth’s rotation makes the winds curve.
Observe how the Coriolis
effect influences wind
direction.
Weather Instruments
• http://www.weatherwizkids.com/weatherinstruments.htm
• HomeLearning - Draw and Label