S3 Science: The Rock Cycle And Earth Resources (Paper 1 (basics))

S3 Science: The Rock Cycle and Earth Resources (Paper 1 (basics))

2026-11-14

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Tutor Prep Guide · the three rock types, magma cooling and crystal size, bedding and fossils, weathering against erosion, transport and deposition, metamorphism, soil formation, renewable and non-renewable resources, impacts of quarrying, the three Rs and site restoration

S3 Science: The Rock Cycle and Earth Resources (Paper 1 (basics))

This paper starts from the three rock types and practises recognising igneous, sedimentary and metamorphic rocks, cooling rate and crystal size, bedding and fossils, weathering against erosion, with basic calculations on sediment thickness and density.

Direct answers　The three types are defined by formation; cooling gives igneous rock; compaction gives sedimentary rock; heat and pressure give metamorphic rock; fossils are mostly in sedimentary rock; slower cooling gives larger crystals; weathering stays in place while erosion removes fragments; volume equals mass divided by density.

01　Paper details (check answers afterwards)

Item	Detail
Questions	10
Suggested time	20
Difficulty mix	Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1
Chapter	Chapter: S3 Science: The Rock Cycle and Earth Resources
Level	S3

02　Questions (10 items)

FoundationGeologists group rocks into three main types. What are they?
FoundationGranite forms when magma cools underground. Which rock type is it?
FoundationIn which rock type are fossils most often found?
IntermediateMagma cooling slowly deep underground gives crystals that are larger or smaller?
IntermediateWhy do sedimentary rocks often show layers?
IntermediateWhat is the difference between weathering and erosion?
ChallengeA sediment layer thickens by 0.5 cm every 100 years. How much does it thicken in 2000 years?
ChallengeA granite sample has a mass of 270 g and a density of 2.7 g/cm³. What is its volume?
ChallengeWhat is the main chemical component of limestone?
Error redoA student says a rock never turns into another kind of rock once formed. What is wrong?

03　Answers and one-line notes

#	Answer	One-line note
1	Igneous, sedimentary and metamorphic rocks	The three types are defined by how they form, and the rock cycle turns one type into another.
2	Igneous rock	Any rock formed by cooling magma or lava is classified as igneous.
3	Sedimentary rock	Layers of sediment bury remains gently enough for them to be preserved.
4	Larger	Slower cooling leaves more time for crystals to grow: cooling at depth may take about 10000 years while surface lava sets within 3 days, roughly 3333 times faster.
5	Sediment is deposited layer upon layer and then compacted and cemented	The layers record the order of deposition, and lower layers are usually the older ones.
6	Weathering breaks rock down in place, while erosion removes the fragments	Weathering breaks rock up where it lies; erosion and transport carry the material away.
7	10 cm	There are twenty periods of 100 years in 2000 years, and 0.5 times 20 gives 10.
8	100 cm³	Volume equals mass divided by density, so 270 divided by 2.7 gives 100.
9	Calcium carbonate	Calcium carbonate fizzes with acid and releases carbon dioxide, which is a common way to identify limestone.
10	Rocks change into other rock types through the rock cycle	Rock can be weathered, buried, heated, squeezed or melted and so become another rock type.

04　What to do after marking

After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
Repeat the same item two days later; move to the next paper only when both attempts are correct.
Parents only need the answer and note columns; there is no need to explain every item.

For any rock question first ask how it formed: cooling gives igneous, layer upon layer gives sedimentary, and heat with pressure gives metamorphic; once fragments have moved away it is erosion and transport, not weathering.Tutor Registration →

Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.