Science
Earth's Systems
Conceptual
7–8 yrs
Rocks and soil
岩石与土壤
Description
Recognise that soils are made from rocks and organic matter, and that different soils have different properties
Mastery Evidence
- State that soil is a mixture of broken-down rock particles and decomposed organic matter (humus)
- Compare at least two types of soil (sandy, clay, loam) and describe their different properties
- Explain that soil formation takes a very long time as rocks gradually break down
Assessment Prompt
Can your child explain that soil isn't just dirt — it's made from tiny broken-down bits of rock mixed with dead leaves and other organic material?
Prerequisites 1
Properties of materials
学习土壤来源于岩石风化之前，必须先了解岩石的相关知识
Unlocks 1
The Rock Cycle
