Weather

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Weather
By Alina and Harland

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Water Cycle

• The sun is the main energy of the water cycle.
  First the sun heats up the water/lake. Then the
  water evaporates which cause war air to rise and
  make condensation. Then all of the little
  molecules stick together to make precipitation.
  Then the water from the rain or snow or hail runs
  off back into the lake or river and the water
  cycle continues on going around and around.

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The sun

• The sun is the earths main energy. It keeps the
  water cycle going. It gives us heat and without
  he sun there would be no weather and with no
  weather we wont be alive. The sun is about ten
  times bigger than any planet in the whole solar
  system. The sun gives sunlight which cause
  weather.

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Cirrus clouds

• There are four types of clouds in weather which
  are cirrus clouds, stratus clouds, cumulus clouds
  and nimbus clouds. Cirrus clouds are composed of
  ice crystals that come from the freezing of cool
  water droplets.Cirrus clouds have layers.They are
  20,000 meters (60,000 ft) or even greater!

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Stratus clouds

• Stratus clouds are dark grey clouds that usually
  cover the entire sky. Stratus clouds never rain
  because theyre too thin. They are also in
  layers.High level above 20,000ft.Medium
  6,500-20,000 ft. Low below 6,500ft.

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Cumulus clouds

• Cumulus clouds usually have really flat bases but
  fluffy/lumpy tops. Most of the times cumulus
  clouds look like pieces of cotton. Cumulus clouds
  can tower from below60,000ft to greater than
  50,000ft.

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Nimbus clouds

• Water evaporates when the sun heats up the water
  which cause warm air to rise. Evaporation is one
  of the things that happen in the water cycle.

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Evaporation

• Water evaporates when the sun heats up the water
  which causes warm air to rise then expand.
  Evaporation is one of the things that happens in
  the water cycle.

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Condensation

• Condensation is another scientific name for
  clouds. Once the sun heats up the air, the warm
  air rises and the higher it is the cooler it
  gets. The cool air starts to expand and make
  condensation. So all the water that had
  evaporated is turned into clouds.

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Precipitation

• All the water that is in the condensation when it
  gets cold it falls. It can fall as rain,hail,snow
  and sleet which is called precipitation. It hails
  in the summer and it snows in the winter.

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Collection

• Collection is when the precipitation falls and
  it collects into lakes and rivers and makes the
  lakes bigger. That is the whole water cycle.

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Weather Symbols

• Weather symbols is what scientists use to tell
  what kind of weather it is like for short.
  Weather symbols tell wind speed, temperature,
  wind direction, dew-point, how cloudy it is, air
  pressure and if it is snowing or raining.

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Experiments

• There are a lot of weather experiments that you
  can do. If you put about 3 cm of water put it in
  a plastic bottle then put a match that is lit
  then blow it out then put the match in the
  bottle. Squeeze the bottle then let go and it
  will form a little cloud inside the bottle.

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Thermometer

• A thermometer is used to measure temperature. It
  is also used to forecast weather whenever you
  want to know if its either cold or hot outside.

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Anemometer

• Anemometers are used to measure wind speed.
  Sometimes it can be very windy which will cause
  the anemometer to spin very fast. The faster it
  spins the more harder the wind blows.

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Barometer

• A barometer is used to measure air pressure. Air
  pressure is when pressure pushes down on the
  earth from outer space. When there is high
  pressure the arrows will point up but when there
  is low pressure the arrows will points down.

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Wind Sock

• A wind sock is used to measure wind direction.
  You can also measure wind direction with a
  weather vain. Whichever direction the wind blows
  the weather vain will point there

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Humidity

• Humidity is moisture in the air. Scientists use
  percent to to tell how much moisture that is in
  the air. The higher the percentage is the more
  humidity there is.

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Atmosphere

• The atmosphere is all around the earth. The
  atmosphere has many layers and gases. It helps us
  breathe and it has lots of air pressure pushing
  down. The atmosphere helps keep the earth and
  the weather normal.

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Dewpoint

• Dew-point means that at a certain temperature it
  will precipitate. It is also the water that is
  left on plants in your back yard.

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THE END

• What we were trying to show you is that weather
  is important. We told you everything that we knew
  about weather in our weather power-point
  presentation.