clouds [1] [video clips] [appearing pictures with questions]

• 1. These are screenshots taken from the video clip to help you understand the topic.
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• 2. What are clouds ?
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• 3. Why are they able to float in the air ?
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• 4. How are clouds formed ?
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• 5. What happens when the warm air rises ?
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• 6. When do they become visible clouds ?
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• 7. Why are clouds usually white [part 1] ?
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• 8. Why are clouds usually white [part 2] ?
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• 9. How do clouds turn grey [part 1] ?
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• 10. How do clouds turn grey [part 2] ?
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• 11. How do clouds turn grey [part 3] ?
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• 12. Why do clouds float [part 1] ?
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• 13. Why do clouds float [part 2] ?
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• 14. Why do clouds float [part 3] ?
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• 15. Why do clouds float [part 4] ?
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• 16. How do clouds move ?
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clouds [1] ends at 2 minutes 40 seconds