Soil is vital to all living things and is made from a mixture of tiny particles of rock, humus (dead plants and animals), air and water.
The solid rock, underlying the loose soil (bedrock) will differ from place to place and this has an effect on the soil type. There are 3 main kinds of soil – sand, silt and clay. Loam is a mixture of all of them.
It takes 400 years to develop 1cm of typical soil and 3,000 – 12,000 years to form enough to farm! Check out the How much soil activity to really appreciate this precious natural resource!
Transparent lidded container, spoon, water
Soil texturing flow diagram (ideally laminated)
Collecting bucket, spoon
Create a recipe card for soil
Extension: What would be the ideal type of soil to grow crops and why?
Try growing plants in different types of soil - what can you discover? Use the 'Be a soil scientist' activity to give you ideas.