Presentation on theme: "This project and its actions were made possible due to co-financing by the European Fund for the Integration of Third-Country Nationals Rocks - sedimentary."— Presentation transcript:
Limestone It is a sedimentary rock. It is formed from the shells of sea animals. It may contain remains of fossils. It is used in buildings and to make cement. It is heavy. It corrodes.
Sandstone It is a sedimentary rock. It is made of sand-sized grains of similar sizes. It can be many colours, but is often reddish brown. It feels rough. It is easy to carve. It can crumble. It can be used to sharpen tools.
Shale It is a sedimentary rock. It is made of very fine rounded grains. Fossils are often found in it. It forms layers which can be split into thin sheets. It can be used to make tiles. It is formed in lakes.
Chalk It is a sedimentary rock. It is formed from the shells of a particular sea animal. It is white. It is porous. It is used to write on blackboards.