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1. Evaporation from ocean, lakes and rives, to transpiration to condensation to precipitation to surface runoff. That is the water cycle.

2. Cumulus- fluffy like a marshmallow also piled up.
cirrus- is wispy and look like a horses tail.
stratus- is like a sheet, layer or blanket of clouds.

3. Isobars show lines that are equal amount of atmospheric pressure.

4. When the pressure is low, the air is free to rise into the atmosphere where it cools and condenses. This condensation forms clouds made of water droplets and ice crystals around dust particles in the sky. Eventually these droplets and ice fall as rain.

5. When a large temperature difference occurs in a vertical column in the atmosphere lightning forms.

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Isobars show lines that are equal amount of atmospheric pressure.

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Tornadoes form when strong updraughts of air rise in a funnel shape. The air touching the earth moves slower than air above it. This causes the air to roll over and get sucked up, rotating through the inside of the cloud.

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Thunder storms: When a large temperature difference occurs in a vertical column in the atmosphere.

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How Lightning starts

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How a tornado starts

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Lightning: Lightning starts from thunder. Thunder is when clouds in the sky turn into cumulonimbus and then the temperature changes. Then a lightning bolt comes out of the clouds. The impact of that is that sometimes it electrocutes trees and start a fire.

Tornadoes: A tornado starts when it is a very windy day. The tornado forms when strong currents of air is lifted into the air. When the tornado is formed the sky is usually dark.

tsunami: A tsunami occurs when a big earthquake has happened near the sea. It also occurs when a underwater volcano is erupting.

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Low pressure areas are marked with a" L" Low pressure areas face wind inwards. These winds push the warm air up like a funnel and cool air rushes in to replace it. As the warm air rises it cools, forming water vapour and then clouds, leading to rain.

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Areas of high pressure is marked with a "H" and this represents fine weather with few clouds. wind on edge of "H" can be strong.

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The lines on the weather maps are called " isobars". The numbers on the lines show the air pressure.

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The weather maps we see on TV and in the newspaper are called "surface charts". The lines and symbols represent weather patterns on earth.

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The sun warms up the land and sea. This heat radiates upwards. As the warm air rises it expands. As it expands, it cools down. The colder air becomes denser and sinks back toe earth. We experience this circulation of air as wind (hau).

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A drought happens when
a place hasn't had rain for a couple of days.

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Same as hail but without the wind forcing it back into the cloud.

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If the temperature is below freezing the water drops will come together and form ice crystals. When the ice crystals fall down the wind will push them back up to the clouds and will do that numerous times. When they get to heavy the wind won't be able to do that so it pushes them down to earth causing ice storm.

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If the temperature in the atmosphere is freezing, the water vapour forms into ice which drops down from the clouds as hail.

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As water vapour evaporates into the air, it joins together to form clouds. When clouds are too heavy the after vapour falls as rain (precipitation).