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Questions and Answers
Which of the following best describes clouds?
Which of the following best describes clouds?
- A large body of water in the sky
- A collection of tiny droplets of water or ice crystals (correct)
- A mixture of dust and droplets
- A gas that can float in the air
How are clouds formed?
How are clouds formed?
- When light scatters in the atmosphere
- When dust and droplets evaporate
- When water vapor turns into a gas
- When warm air rises and expands (correct)
Why are clouds white?
Why are clouds white?
- Because they reflect sunlight
- Because they are made up of a mixture of dust and droplets
- Because they absorb all wavelengths of light
- Because their water droplets or ice crystals scatter light (correct)
What makes clouds turn grey?
What makes clouds turn grey?
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What is water vapor?
What is water vapor?
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Study Notes
Cloud Formation and Characteristics
- Clouds are collections of tiny water droplets or ice crystals suspended in the air, often visible as white or gray masses
- Clouds are formed when water vapor in the air cools and condenses into visible liquid droplets or ice crystals
- Water vapor is water in its gaseous state, formed when the temperature and humidity in the air are suitable for evaporation
- Clouds appear white because of the way that light scatters off the water droplets or ice crystals, giving them a bright, opaque appearance
- When clouds absorb or mix with other substances, such as pollutants or dust, they can take on a grayish hue, indicating a change in their composition or environment
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