Science Class 7
Heat Transfer in Nature
Left alone, heat moves from hot to cold. Three ways it travels.
15 lessons · ~75 min total
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Lessons in this topic
- 0 Start here Left alone, heat moves from hot to cold, in three ways. One picture shows them all. · 3 min You are here
- 1 Heat and temperature are different Temperature is a number on a thermometer. Heat is what moves in or out to change it. · 5 min
- 2 Heat moves from hot to cold Left alone, heat leaves the hotter thing and goes into the colder one, until both read the same. · 5 min
- 3 Through a solid: conduction In a solid, heat moves along the material while the material stays in place. · 6 min
- 4 In liquids and gases: convection In water or air, the warm part rises and the cooler part sinks to take its place. · 6 min
- 5 Across empty space: radiation Heat can move with nothing in between. That is how the Sun warms the Earth. · 6 min
- 6 Three ways, every day Pans, shawls and sunny gates: ask what carried the heat, and name the way. · 6 min
- 7 Checkpoint: how heat moves A quick graded check on how heat moves. · 4 min
- 8 The water cycle The Sun lifts water as vapour. Clouds bring it back as rain. · 5 min
- 9 Water seeping into the ground Rain seeps down and fills an aquifer. Packed gravel lets it through fastest. · 5 min
- 10 Sea breeze and land breeze By day the wind comes from the sea. At night it blows the other way. · 5 min
- 11 Ice stupas An ice stupa stores winter water as ice for spring. · 5 min
- 12 Checkpoint: water, breezes and ice A quick graded check on the water cycle, breezes and ice stupas. · 4 min
- 13 The big picture The whole chapter on one screen. · 3 min
- 14 Track quiz Twelve quick questions on heat. The ten rules are at the top. · 7 min
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