Today we carried out three different experiments to test the hardness, permeability and buoyancy of different types of rocks. First, we completed a prediction on whether we thought the rocks would be hard or soft, permeable or impermeable, or sink or float. We used a range of equipment to test a variety of rocks including chalk, sandstone, granite, basalt, slate and marble. We found that chalk is soft, sandstone is permeable and marble is not permeable. After carrying out the experiments, we checked our results against our predictions to see if we got any right.
