Why the Earth is called BLUE PLANET

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Why the Earth is called BLUE PLANET?
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What joints the pictures? Find differences among
these three pictures.
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Find concrete examples of these forms in the
nature. What conditions are necessary to exist
these forms in the nature?
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Instructions

• Now should be presented pictures as for example
• snow, rain, clouds, iceberg, snow flake, hail,
  spruit, pond, river, etc.

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Find concrete examples of these forms in
artificial conditions.
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What conditions are necessary for realization of
following transformations?
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Experiments

• 1. The plant in a plastic bag
• 2. Ice cube melting in beaker
• 3. Mirror with dew on it.

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Do you know yet why the Earth is called Blue
PLANET ?