Rocks Flashcards
How is igneous rock formed?
They are formed when magma from inside the Earth erupts and cools on the surface of the Earth due to volcanic activity (extrusive rocks); or when the magma cools inside the Earth to form intrusive rock which may be exposed to weather and erosion later.
How is metamorphic rock formed?
They are formed when rocks are exposed to lots of pressure and/or heat.
How is sedimentary rock formed?
They are formed when sediments get deposited on the bottom of oceans, seas or lakes. These sediments include eroded rocks and skeletons of sea creatures, which build up.
Uses of Granite
used for making gravestones, statues and countertops.
Uses of Pumice
used in toothpaste, cosmetic products and cement.
Uses of Basalt
used in the construction of buildings and statues.
Uses of Gabrro
used for flooring, worktops, facing and monumental stones.
Uses of Sandstone
used for paving tiles and the construction of buildings and statues.
Uses of Limestone
used in toothpaste, to make building materials and statues.
Uses of Shale
used as filler in the production of paint, used in brick making and is sometimes used as a road aggregate.
Uses of Marble
used for fireplaces, sculptures, gravestones, work surfaces, chopping boards and ornaments.
Use of Slate
used for roofing, snooker tables, flooring, gravestones and garden decoration
Use of Schist
used for flooring and garden decorations
What are the imprints found in rocks of dead animals and plants?
Fossils
