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| A type of igneous rock. It is the most common rock type in the earth's crust and makes up most of the ocean floor. |
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A type of sedimentary rock made up of pebbles, stones, and smaller particles pressed together by the action of waves or water. Finding a bed of this rock is a great clue that a river or beach once existed in that location.
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The process by which soil, sediment, and small pieces of rock are carried away from their original locations and transferred elsewhere by the actions of wind, water, ice, or living organisms.
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A type of sedimentary rock often found near oceans and lakes. Often contains imprints of shells or othe fossils.
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One of the three main rock types, formed from the cooling and hardening of magma.
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Hot, molten rock found deep inside the earth.
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A type of metamorphic rock formed when limestone is pushed down into the earth and subjected to intense heat and pressure for a long period of time. Often used in scupture or buildings and has colors running through it that look like veining.
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One of the three main rock types, formed deep within the earth, where rock material is subjected to intense heat and pressure (squeezing). The rocks that result from these processes often have ribbonlike layers and may have shiny crystals on their surface, formed by minerals growing slowly over time.
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| A type of extrusive igneous rock, created from lava that cools so quickly that no crystals form on its glass like surface. |
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The recurring series of events that rocks undergo, over time, that transforms them from one type to another.
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the wind, water, the sun, temperature changes acting on rocks to wear them and break them apart, creating sediment. |
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One of the three main rock types, formed from particles of sand, shells, pebbles, and other fragments of material. These materials accumulate in layers and over a long period of time and harden into rock.
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| rock formed by lava that squeezes out on the surface of the earth and cools |
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| this rock is formed from magma that cools slowly below the surface of the earth. |
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| Processes forming sedimentary rock: sediment accumulates, building up layers that weigh down the material underneath. The weight presses the sediment particles together and water flowing through the particles sticks them together. |
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| What type of rock is formed by melting and cooling? |
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| What type of rock is formed by pressure and heat (not hot enough to melt it)? |
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| What type of rock is formed after weathering and erosion of materials occurs on other types of rock? |
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