Which rock is the hardest?
Use this investigation planning sheet to plan and record a scratch test investigation into the hardness of different rocks.
How can I use this with my class?
Use this group of resources to explore rock properties by carrying out the scratch test with your class. Use the Which rock is the hardest? Worksheet to record predictions and results of the test, reflect on how fair the test was and draw a graph.
Your class can then use this information to complete the rock properties activity sheet and apply their knowledge to different rocks and their uses. They can then explore the idea of permeability.
What's inside
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Rock properties activity sheet
Use this activity sheet to group rocks according to their hardness and to relate their properties to use.
Want to make a career connection?
Learn about careers related to this lesson…
Meet a petrologist presentation
Use this presentation to inspire your pupils to think about a potential future career and link learning about rocks to the real-world.
Meet a petrologist job card
Inspire your pupils to think about a future career and link learning about rocks to the real-world, with this job-role card.
Meet a petrologist video
Watch Marli, a mineral resources petrologist (who studies rocks) at work and find out about the knowledge and skills she needs for success.
Meet a palaeontologist presentation
Use this presentation to inspire your pupils to think about a potential future career and link learning about rocks and fossils to the real-world.
Meet a palaeontologist job card
Inspire your pupils to think about a future career and link learning about rocks and fossils to the real-world, with this job-role card.
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