(a) Give two examples each of sedimentary and metamorphic rocks (b) Outline four major differences between sedimentary and metamorphic rocks

Sedimentary rocks: limestone, sandstone, shale, coal (any two).
Metamorphic rocks: marble, slate, gneiss, quartzite, schist (any two).

Assessment: WAEC SSCE - Geography - 2000 Subject: Geography

Question 1 Report

(a) Give two examples each of sedimentary and metamorphic rocks

(b) Outline four major differences between sedimentary and metamorphic rocks

Answer

Sedimentary rocks	Metamorphic rocks
Formed by the deposition and compaction/cementation of sediments.	Formed by the alteration of existing rocks by heat and pressure.
Usually arranged in layers (strata / bedding planes).	Often show foliation (banding) or are recrystallised, without simple bedding.
Generally soft and less compact, and may be porous.	Generally hard, compact and dense.
Often contain fossils of plants and animals.	Fossils are usually destroyed by the heat and pressure.

Sedimentary rocks	Metamorphic rocks
Formed by the deposition and compaction/cementation of sediments.	Formed by the alteration of existing rocks by heat and pressure.
Usually arranged in layers (strata / bedding planes).	Often show foliation (banding) or are recrystallised, without simple bedding.
Generally soft and less compact, and may be porous.	Generally hard, compact and dense.
Often contain fossils of plants and animals.	Fossils are usually destroyed by the heat and pressure.

Related Questions

Everything you need to excel in JAMB, WAEC & NECO