These worksheets can be used for homework purposes or as classroom practice. Great for formative assessment and follows NSW NESA standards STAGE 4 Year 7-8. Content ES1 Sedimentary, igneous and metamorphic rocks contain minerals and are formed by processes that occur within Earth over a variety of timescales. (ACSSU153) Students: a. describe the structure of the Earth in terms of core, mantle, crust and lithosphere b. relate the formation of a range of landforms to physical and chemical weatheri