- Chalk: Soft, leaves a white mark when dragged; used for writing or drawing on hard surfaces.
- Granite: Very hard and attractive, can be polished to a shiny finish; used for countertops, monuments, or decorative surfaces.
- Slate: Impermeable (waterproof), forms flat sheets when broken; used for roofing, flooring, or chalkboards.
- Sandstone: Useful in construction, easily cut into blocks, permeable and erodes easily; used for building walls or decorative stonework since ancient times.
- Limestone: Useful in construction, abundant, easy to cut, hard and slow to erode; used for buildings, statues, or paving.
- Diamond: Hardest rock, difficult to scratch, clear and shiny, very expensive; used in jewelry or industrial cutting tools.
Parent Tip: Review the logic above to help your child master the concept of properties of rocks worksheet.
