The magic school bus inside the earth book review – Flashcards
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The outside of the earth is a shell of hard rock and soil.
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the earth's crust
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the most solid part of the earth is made of great masses of rock. the small rocks that we collect are just pieces that broke off from the huge masses.
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Rocks Come From
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what rocks are made of.
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Minerals
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The top layer of the earth's crust that is made of ground up rock mixed with clay, bits of dead leaves, sticks and small pebbles.
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soil
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what is always under the soil or water deep in the earth. They are formed in layers.
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rock
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the tan sedimentary rock fromed from sand used in buildings and grindstones.
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Sandstone
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the gray striped sedimentary rock that is formed by mud. It is used to help make cement and bricks when ground up and mixed with limestone.
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shale
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the white sedimentary rock, formed from shells. It is used for buildings, chalk, cements and fertilizer.
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limestone
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comes from a word that means to settler.
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Sedimentary
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These rocks formed millions of years ago when the wind blew dust and sand into lakes and oceans. The dust and sand settled to the bottom in layers and over these layers hardend into rock.
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sedimentary rocks
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prehistoric plants and animals that died and was buried in layers of mud, sand or crushed shells that turned into rock.
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fossils
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is made of limestone.
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The empire State building
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shapes that look like cones and icicles formed in caves ground by dripping water that contains tiny invisible bits of limestone.
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stalagmite
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shapes that look like cones and icicles formed in caves ceilings by dripping water that contains tiny invisible bits of limestone
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stalactite
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comes from a word that means to change. Rocks that were changed from one kind to another kind because of heat and pressure.
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Metamorphic
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Melted rock that pushed up through the cracks of the earth's crust. When the rock cools and hardens it becomes this kind of rock.
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Igneous Rocks
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comes from a word that means fire. The heat inside the earth is like fire. It can melt rocks.
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Igneous
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Under the earth's crust are pockets of melted rock. Below this is the layer made of hot rocks.
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mantle
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Liquid metal
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The outer core
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is the very center of the earth
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the inner core
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an opening in the earth's crust where melted rock can flow out. They come in different shapes; cinder cone, composite and shield. They make new land
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volcano
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the material that comes out of the volcano that is melted rock.
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lava
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when lava cools it makes this. In time the soil forms on the rock and plants can grow.
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new rock
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a metamorphic rock formed from limestone uded in statues, monuments and buildings.
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marble
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an igneous rock used for monuments, buildings and curbstones.
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granite
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a metamorphic rock formed from shale used for roofing tile, flagstones and chalkboards.
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slate
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An igneous rock formed from volcanos and is used in road building.
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Basalt
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an igneous rock formed from volcanos used for decoration, indian arrowheads.
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obsidian
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an igneous rock made from volcanos used from the ground up in scouring powder.
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pumice
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a metamorphic rock formed from sandstone used for grinding grain and road building.
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quartzite
