The big picture
Seven ideas make up this chapter. Each one has a small lab.
| Idea | Remember |
|---|---|
| One thing arrives | Sunlight is the main energy source. E = intensity × area × time. |
| What arrives and what leaves | The ground sends out heat. Greenhouse gases hold some back. |
| Not all the same light | UV, visible and infrared light do different jobs. |
| Heated unevenly | Slant and albedo decide how much ground keeps. Uneven heating drives winds. |
| Matter goes round | Water evaporates, condenses, falls and flows back. |
| Life is in the loop | Carbon goes round fast through life, and slow through fuels. |
| One system | Five spheres affect one another. |
Now open Chapter 13, Earth as a System, in your book. Try its questions using these ideas.