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Earth s Weather by Denise Carroll Changes in Weather Weather

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Earth s Weather by Denise Carroll Changes in Weather Weather is what the air is like outside. Weather can be warm or cool. Weather can be sunny, windy, or cloudy. – PowerPoint PPT presentation

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Title: Earth s Weather by Denise Carroll Changes in Weather Weather


1
Earths Weather
  • by Denise Carroll

2
Changes in Weather
  • Weather is what the air is like outside.
  • Weather can be warm or cool.
  • Weather can be sunny, windy, or cloudy.
  • Weather can change quickly.
  • There are four seasons during the year.

3
The Four Seasons
1. Spring begins in March.
  • The air is warm, windy, and rainy.
  • Trees begin to grow new leaves and flowers.
  • Warm air and rain helps plants grow new leaves
    and flowers.

4
The Four Seasons
2. Summer begins in June.
  • The days are hot and sunny.
  • This is the warmest time of the year.
  • Leaves are green on trees.
  • Storms can make the weather change quickly.

5
The Four Seasons
3. Fall or Autumn begins in September.
  • The air begins to get cooler.
  • The leaves of some trees change colors and drop
    off.
  • Some plants die.

6
The Four Seasons
4. Winter begins in December.
  • The air is cold.
  • Some places have snow.
  • Winter is the coldest time of the year.
  • Many trees have lost their leaves.

7
The Water Cycle
  • A water cycle is the way water moves from the air
    to land and back again.

8
Condensation
  • The water vapor rises into the air, cools, and
    condenses into tiny droplets of water.
  • The drops of water come together to form clouds.

Water Cycle
Precipitation
Evaporation is when a liquid changes to a gas.
The water drops become heavy and fall as rain,
sleet, snow, or hail.
  • The suns heat makes water evaporate into water
    vapor.

The rain falls or snow melts and flows to
rivers, lakes, and oceans.
9
Meteorologists
  • Meteorologists are scientists who use special
    tools to measure, predict, and study weather
    conditions.

10
Measuring Weather Conditions
  • A thermometer measures temperature, or how hot or
    cold the air is.
  • A rain gauge measures how much rain or snow has
    fallen.
  • An anemometer measures how fast the wind is
    blowing.
  • A wind vane shows which direction the wind is
    blowing. It points to the direction the wind is
    coming from.

11
ThinkWhy do we need to know the weather
conditions each day?
12
Measuring weather conditions helps people.
  • People will know how to dress when they go
    outside.
  • People can plan outdoor activities or vacations.
  • Scientists can tell people to get ready for bad
    weather or a big storm.
  • Measuring the weather conditions help scientists
    predict the weather.

13
Clouds
  • Clouds are made up of millions and millions of
    small water drops or tiny pieces of ice.
  • Clouds give us clues about how the weather may
    change.
  • We will learn about these three types of clouds.
  • Cumulus
  • Cirrus
  • Stratus

14
Cumulus
  • Cumulus means heap.  These clouds look big and
    puffy like balls of cotton.
  • When these clouds start piling up and turn dark,
    they can bring a storm.

15
Cirrus
  • Cirrus means curl.  These clouds are very high up
    in the sky. 
  • They look thin or feathery and hold only a little
    bit of water.
  • We see these clouds when the weather is sunny.

16
Stratus
  • Stratus means stretched out.  These clouds make
    the whole sky look dark and gray because they
    cover the sky and block the sun.
  • Stratus are low, gray clouds that usually bring
    rain or snow.

17
Preparing for Weather
  • Always listen to the radio and television for
    weather bulletins.
  • Stock a good supply of food that does not have to
    be cooked.
  • Store plenty of fresh water.
  • Make sure you have flashlights and extra
    batteries, candles are not safe.
  • Be sure your pets are safe.
  • Secure loose objects outside your home.
  • Always be calm and patient.

18
Thunderstorms
  • A thunderstorm has rain, thunder, and lightning.
  • When we see big, thick, dark cumulus clouds, we
    might expect thunder and lightning to come.
  • Lightning produces light and heat  - called
    energy.
  • When the air is heated that quickly, it expands
    (gets bigger) and then contracts (gets smaller). 
    When the air expands and contracts, it creates an
    explosion called THUNDER.
  • Lightning safety Stay indoors away from doors
    and windows. Do not use the telephone. Take off
    head sets. Turn off, unplug, and stay away from
    appliances, computers, power tools, TV sets.

19
Tornado
  • A tornado is a funnel-shaped cloud that spins
    very fast.
  • It has very strong winds that can destroy many
    houses and buildings.
  • It picks up debris or buildings by its swirling
    winds.
  • Tornado safety Stay inside away from windows,
    doors and outside walls. Cover your head and body
    to protect yourself from flying objects.

20
Hurricane
  • A hurricane begins over warm ocean waters and has
    winds that are more than 74 mph.
  • It has strong winds, high ocean waves, and lots
    of rain.
  • It causes floods and destroys many homes and
    buildings.
  • The hurricane season begins June 1 and ends
    November 30.
  • Stay indoors, in the center of your home, in a
    closet or bathroom without windows.

21
Blizzard
  • A blizzard is a storm with heavy snow and strong
    winds.
  • It is difficult to see outside during a blizzard.
  • Blizzard Safety Stay indoors. If you go outside
    after the storm, wear layers of clothing.

22
Congratulations
  • You have learned about the four seasons, the
    water cycle, three types of clouds, storms, and
    how to be prepared for weather.
  • Youre an expert weather watcher!
  • REMEMBER TO ALWAYS BE SAFE!

23
Resources
  • http//images.search.yahoo.com
  • http//office.microsoft.com/clipart
  • http//soniacoleman.org/Tutorials/PowerPointTempla
    tes/templates1.htm
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