Transcript science weather fronts

Whether it’s cold or
whether it’s hot, we
shall have weather
whether or not!
What is a weather map?
• A weather map
indicates
atmospheric
conditions above
the earth’s surface.
• Weather maps are
used to forecast the
weather.
Fronts
Cold Front
Warm Front
Fronts
• A front is the boundary between two air
masses, which cause stormy weather.
• A cold front forms when a cold air mass
meets a warm air mass.
• The cold air moves under the warm air,
pushing it up.
• As the warm air rises, clouds form and
precipitation falls.
• Thunderstorms often strike along a cold
front.
• Thunderstorms often strike along a cold
front.
• Warm fronts form as a warm air mass
pushes into a cold air mass.
• The warm air slowly moves up over the cold
air.
• Layers of gray clouds and steady
precipitation are common along a warm
front.
High and Low Pressure
High Pressure
Low Pressure
• An area of high
pressure means dry,
cool air.
• High pressure brings
fair weather and
light winds.
• High pressure is
represented with a
big blue H.
• An area of low
pressure means
warm, moist air.
• Low pressure brings
stormy weather.
• Low pressure is
represented with a
big red L.
Weather Map Information
Weather Map Information
Analyzing Weather Data
• A meteorologist is a scientist who studies
weather.
• Studying weather involves measuring
conditions near Earth’s surface and high in
the atmosphere.
• Meteorologist use the data they collect to
identify the kinds of air masses over an area.
• They also predict what kind of front will form
and where that front will move.
• This type of information is used to
produce a weather map.
• You can read weather maps in
newspapers.
• A forecast is a prediction of what the
weather will be for the particular day,
week, or a longer period of time.
5 Day Weather Forecast
Look at the following weather map and make up questions to go
along with the weather map. You will exchange questions with a
partner and you will answer each other’s questions.
Example Questions for Weather Map
What city did a cold front just pass through?
Answer: Denver
What state has the highest temperatures?
Answer: New Mexico
What states are experiencing areas of high
pressure?
Answer: Washington, Maine, and Arkansas