Which rocks are porous?

As part of our Science topic on rocks, we designed an experiment to see which rocks would let water go through them.

We thought hard about how we would test this. And then we planned our experiment, working out what equipment we would need, what we thought would happen and how we would make it a fair test.

After we had done all of this, we carried out our experiment and tested 5 different rocks – slate, sandstone, pumice, flint and chalk. Do you think that water went through any of these?

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