Which Rocks term is correctly associated with identifying feature: “splits into smooth thin sheets”, and also with “used for roofing and writing boards”?

Correct Answer: Option C — Slate. Slate is correct because it is splits into smooth thin sheets. Slate is also associated with used for roofing and writing boards. A further identifying fact is that Slate is splits into smooth thin sheets. Another useful fact is that Slate is associated with used for roofing and writing boards. Why the other options are incorrect: Option A — Quartzite: It is very resistant to weathering and is associated with used as construction aggregate and decorative stone; those are the identifying facts of Quartzite. Option B — Granite: It is coarse-grained with visible crystals and is associated with widely used as building and decorative stone; those are the identifying facts of Granite. Option D — Basalt: It is dark-coloured and fine-grained and is associated with common in oceanic crust and lava plateaus; those are the identifying facts of Basalt. Exam Takeaway: Link Slate with “splits into smooth thin sheets” and “used for roofing and writing boards” for quick revision.