Science - rocks Cool Quiz 3.0 / 5 based on 3 ratings ? ScienceThe EarthGCSEAll boards Created by: AngelCreated on: 30-10-09 15:50 Where are the oldest layers of rock usually found in a cliff made from sedimentary rock? at the bottom 1 of 4 What is magma? molten rock 2 of 4 What happens to pieces of rock as they are transported by a river? They get smaller and more rounded. 3 of 4 Over what sort of time period do sedimentay rocks form? Over millions of years 4 of 4
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