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Lesson

Air, Water, and Weather

Follow water through the water cycle, explain everyday weather, and choose ways to protect air and water.

30min lesson

Objectives3 goals Lesson6 blocks Review11 assets Practice39 items

Learning objectives

What to understand

3 goals

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Describe evaporation, condensation, precipitation, and collection.
Explain how moisture and temperature affect clouds and rainfall.
Connect weather observations and resource conservation to daily life.

Lesson

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6 sections

Concept

Key idea

Air is a mixture of gases, mainly nitrogen and oxygen. It also contains changing amounts of water vapour. Weather describes the conditions outside at a particular place and time: how warm, windy, cloudy, or wet it is. In the water cycle, liquid water evaporates from surfaces such as oceans, lakes, and wet soil. Energy from the Sun helps drive this process. Evaporation can happen without boiling. Plants also release water vapour through transpiration. When moist air cools enough, water vapour condenses into tiny liquid droplets. Clouds can contain these droplets, ice crystals, or both. When droplets or ice particles grow large enough to fall, they produce precipitation such as rain, snow, or hail. Water then collects in rivers, lakes, and oceans, flows over land as runoff, or soaks into the ground. The cycle has many paths and no single starting point.

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6 lesson sections6 cards / 5 notes20 MCQs / 19 written questions

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39 prompts

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Earth, Environment, and Sky

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Air, Water, and Weather

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Earth, Environment, and Sky

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Air, Water, and Weather

What to understand

Step-by-step lesson

Key idea

What to notice

Worked example

Common mistake to avoid

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Quick check

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Note highlights

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Summary

Remember

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Earth, Environment, and Sky

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