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KS3Chemistry · Years 7 to 9

Earth and atmosphere

Four lessons that start with questions. Drill towards the centre of the Earth, watch crystals grow as magma cools, freeze water in a crack until the rock splits, follow carbon round the carbon cycle and see how greenhouse gases trap heat. Get one wrong and the diagram shows you why. Prefer to read first? Every lesson has animated notes too.

Start lesson 26.1 →Daily 5

26.1

The Earth

The layers of the Earth, how we know about them, and what the crust is made of.

Questions →Notes

26.2

The rock cycle

Igneous, sedimentary and metamorphic rocks, and how each turns into the others.

Questions →Notes

26.3

The atmosphere and the carbon cycle

What the air is made of, and how carbon moves between the air, living things, the sea and the rocks.

Questions →Notes

26.4

Climate and resources

Carbon dioxide, the greenhouse effect, climate change, limited resources and recycling.

Questions →Notes

Daily 5

Five quick diagram questions a day from this unit. The ones you get wrong come back sooner. Progress saves in this browser.

Start today's Daily 5 →

What this unit covers

Mapped to the KS3 national curriculum (Chemistry: Earth and atmosphere).

Programme of study	Lesson
the composition of the Earth	26.1
the structure of the Earth	26.1
the rock cycle and the formation of igneous, sedimentary and metamorphic rocks	26.2
the carbon cycle	26.3
the composition of the atmosphere	26.3
the production of carbon dioxide by human activity and the impact on climate	26.4
Earth as a source of limited resources and the efficacy of recycling	26.4

Next at GCSE

C9 The atmosphere → C10 Using resources →