Creative Rock

In Glogpedia

by 1lbHiNala
Last updated 3 years ago

Discipline:
Science
Subject:
Earth Sciences
Grade:
6

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Creative Rock

Sedimentary rocks are formed from particles. Like sand, shells, pebbles, and other fragments of material. Together, all these particles are called sediment. Gradually, the sediment accumulates in layers and over a long period of time hardens into rock. Generally, sedimentary rock is fairly soft and may break apart or crumble easily. You can often see sand, pebbles, or stones in the rock, and it is usually the only type that contains fossils.

Creative Rock (sedimentary rock)

Limestone

Rock Gypsum

Shale

Sandstone

Metamorphic rocks are formed under the surface of the earth from the metamorphosis (change) that occurs due to intense heat and pressure (squeezing). The rocks that result from these processes often have ribbonlike layers and may have shiny crystals, formed by minerals growing slowly over time, on their surface.

Igneous rocks are formed when magma (molten rock deep within the earth) cools and hardens. Sometimes the magma cools inside the earth, and other times it erupts onto the surface from volcanoes (in this case, it is called lava). When lava cools very quickly, no crystals form and the rock looks shiny and glasslike. Sometimes gas bubbles are trapped in the rock during the cooling process, leaving tiny holes and spaces in the rock.

Igneous

Metamorphic

Gneiss & Marbel

Obsidian & Basalt

Obsidian

Phyllite


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