Magma is molten rock found under ground, Lava is molten rock found above the Earth's surface.
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15
What is the Fossil Record?
The story of life on Earth through stone.
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15
What is the process of preserving organisms in stone called?
Fossilization
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15
Give 3 examples of sedimentary rocks.
Sandstone, Mudstone, Limestone, Shale, Coal...
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Name and explain one of the most common methods of fossilization that causes the remains of organisms to be altered.
Perminerlization- when minerals from water or the ground enter the pores of dead plants or animals. These minerals harden the remains and turn into stone.
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15
What is stratigraphy?
The study of layers of rocks to determine geological timelines.
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15
Name 3 types of fossilization methods that allow organisms to remain unaltered.
Organisms that have been frozen, preserved in tar pits or mummified
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What are fossils?
Remnants or imprints of organisms that are naturally preserved in stone.
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How are metamorphic rocks formed?
When heat and pressure are applied to layers of rocks found deep underground.
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What are the layers of rocks called?
Strata
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15
What does the law of superposition state?
Layers deposited first will be oldest and are found at the bottom of a rock, while layers deposited recently are the youngest and are found at the top.
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15
What are the 3 main types of rocks?
Sedimentary, Metamorphic and Igneous
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15
Explain one way in which organisms can be mummified?
When organisms eg. insects, are trapped in amber. Tree sap covers the insect forming a protective seal. Overtime the sap hardens with the insect inside.
