The Rock Cycle

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Published: Saturday, 05 October 2024 10:00

Written by Year 3

Did you know that rocks are always changing in what is called ‘The Rock Cycle’?

In Year 3, this week we have been geologists and made the rock cycle to learn how different types of rocks are formed.

First, we cut the sweets into small pieces to represent sediment. Then we added pressure to compress the layers of sediments to form a 'sedimentary rock'.

We then added heat and pressure using our hands to compress the sweets into a ball to represent a metamorphic rock.

 After that, we placed our 'metamorphic rocks' into microwave to melt the 'rock' to form 'magma'. 

Did you know melted rock or magma is sent to the Earth’s surface by a volcano? It cools and forms an igneous rock!

We used the rolling pins to break the 'igneous rocks' to show how the weathering and erosion breaks down the rocks into sediment again over time. The Rock Cycle begins again!

Interesting fact-  Rocks don’t need to follow this specific cycle. They may change from one type to another and back again in any order!