Metamorphic rock
I can describe how rock can be changed deep underground.
Metamorphic rock
I can describe how rock can be changed deep underground.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- In a crystal, the atoms are all arranged in a very regular pattern.
- In some substances, very high pressure, at a high temperature, can push particles together to form crystals.
- Between tectonic plates, the pressure and temperature are high enough for large crystals to grow inside solid rock.
- Metamorphic rocks form under extreme pressure and temperature, altering original structures.
- Aligned crystals in metamorphic rocks give them useful properties (e.g. decoration or easily separated into sheets).
Keywords
Pressure - The effect of a force acting over an area.
Metamorphic rock - Rocks that have changed due to heat and/or pressure (e.g. marble, slate).
Aligned - Grains that line up in the same direction are described as aligned.
Common misconception
Pressure and heating caused by burying alone is enough to cause metamorphism or rock to melt.
Highlight that the temperatures / pressures needed for metamorphism or rocks to melt are typically found at plate boundaries / hot spots.
To help you plan your year 8 science lesson on: Metamorphic rock, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 8 science lesson on: Metamorphic rock, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 3 science lessons from the Earth's resources unit, dive into the full secondary science curriculum, or learn more about lesson planning.
Equipment
Toothpicks (could use matchsticks), rulers ×2; plasticine, stirring rods (optional: shells).
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
Lesson video
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Starter quiz
6 Questions
the thick, solid layer beneath the crust
the central part of Earth
the outermost layer of Earth