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Weather Phenomena

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Weather Phenomena SOL 4.6 Follows along with Interactive Notebook notes * Teacher should use the essential knowledge from the 4th grade science curriculum framework ... – PowerPoint PPT presentation

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Title: Weather Phenomena


1
Weather Phenomena
  • SOL 4.6

Follows along with Interactive Notebook notes
2
Weather Includes
Temperature
Precipitation
Wind
3
Weather Instruments (Tools)
  • Temperature- the measure of the amount of heat
    energy in the atmosphere
  • Measured using a
  • THERMOMETER

4
Additional Weather Instruments
  • Wind Speed is measured using an ANEMOMETER
  • Wind Direction is measured using a
  • WEATHER VAIN.

5
Additional Weather Instruments
  • A RAIN GAUGE is used to measure the amount of
    precipitation.

6
Precipitation Includes
  • Rain
  • Snow

Formed by ice crystals
7
More types of Precipitation
Mixture of snow and rain
  • Sleet
  • Hail

Formed by ice crystals
8
Air Masses and Fronts
  • Air Masses formed when air in the atmosphere is
    heated at the equator and cooled at the poles.
  • Fronts formed when two air masses of different
    temperatures and humidity bump into each other.
  • Humidity is the amount of water vapor
  • in the air.

9
Types of Fronts
  • Cold front
  • Warm front

Cold air mass pushes into a warm air mass.
Warm air mass pushes into a cold air mass.
10
Additional Weather Tools
  • Air pressure is the result of the mass/weight
    of the air and temperature pushing on its
    surroundings. (atmospheric pressure)
  • Measured using
  • a BAROMETER

11
Do weather forecasters use air pressure to
predict the weather?
  • High pressure areas are formed when air is
    cooled.
  • Low pressure is formed when air is warmed.
    Weather associated with low pressure areas are
    clouds, rain, and wind.

12
Storms
Thunderstorms
Tornadoes
Hurricanes
13
Thunderstorms
Strong winds, heavy rain, thunder, and lightning.
Most common in Virginia, but when?
How are they formed?
14
Hurricanes
Largest Storm on Earth!
Form over warm water
How do they begin? What are some of the
characteristics of a hurricane?
15
Tornados
Column of warm air begins to spin upward forming
a funnel cloud.
What types of wind speed and what can they do?
16
CLOUDS
  • Clouds are formed when warm air carrying water
    vapor rises from the Earth and the water vapor
    cools down and connect to each other.
  • Are all clouds the same?

17
Cumulus
  • Fluffy, white clouds with flat bottoms.
    Cumulus clouds usually indicate fair weather.
    (Middle)

Resemble?
18
Cirrus
  • Feathery, wispy, clouds associated with fair
    weather. They often indicate that rain or snow
    will fall within hours. (High)

Made from?
19
Stratus
  • Flat, smooth, gray clouds that blanket/cover
    the whole sky. (low)

What type of weather?
20
Cumulo-nimbus
  • Foul weather storm clouds that bring heavy rains
    and thunderstorms.

How are they formed?
21
Spot the cloud!
  • Low and flat ..

Stratus
22
Spot the cloud!
  • Middle level,
  • fluffy ..

Cumulus
23
Spot the cloud!
  • High level,
  • wispy ..

Cirrus
24
Spot the cloud!
  • Rain bearing,
  • storm clouds ..

Cumulo-Nimbus
25
Lets Review ?
  • Its time to play the

Flyswatter Game
26
(No Transcript)
27
The ABCs of Weather
  • Draw a letter from the bag. Share a word or
    phrase that begins with the letter to summarize
    weather.
  • Tara Moore, Elementary Lead Science Teacher
  • Suffolk Public Schools
  • October 2005
  • Some cloud slides adapted from John Harris,
    Radley College, UK
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