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Science 7 - Planet Earth
Vocabulary Terms for Science Focus 7 Unit
Terms in this set (41)
two or more plates colliding together
two or more plates moving away from each other
two or more plates meet, pushing one below another; earthquakes are often form here
a machine that measure the strength of earthquakes
a break or fracture in the bedrock along which rock have moved
an upfold of rock layers in mountain formation
a downfold of rock layers in mountain formation
low angle faulting of rock where one part is raised or lowered
fault block mountains
mountains formed by the process of thrust faulting, making a block
mountains that are formed by the combined processes of folding and faulting
a rock-like substance formed when water penetrated dead organic matter, and deposits dissolved mineral matter
a type of animal remains in which evidence of animal activities have been preserved
a geological theory; according to this theory, the oldest layers will be on the bottom and the youngest layers will be on the top
the name of the supercontinent thought to have existed approximately 350 million years ago
elements or compounds. The basic building blocks of rocks
a natural material composed of one or more minerals
a type of pure substance that cannot be broken down into simpler parts
melted rock, formed under Earth's crust by high temperature and pressure
liquid rock that breaks through Earth's crust, as in a volcanic eruption
Sediment & Sedimentation
loose material such as bits of rock from erosion that are deposited in bodies of water
the process by which sedimentary rock is formed from sediment, through weight and pressure
a process by which particles are glued together by another material
Erosion & Weathering
the process in which rocks are broken down and sediment
is formed by mechanical, chemical, or biological means
the top layer of the Earth. Solid and only 5-30km thick
Thickest layer of the Earth, has the consistency of taffy; not solid, not liquid
the inner part of the Earth, liquid in nature.
the inner part of the Earth, solid in nature.
the physical breakdown of rock by gravity, temperature change and weather
the breakdown of rock by chemical reactions, like acid rain.
the breakdown of rock by living organisms.
the shininess of a rock
the breaking of rock along smooth, flat lines
the breaking of rock into rough or jagged edges
the scale used to measure the hardness of rock
the scale used to measure earthquakes
Rock formed by the heating and cooling of other rock
Rock formed by heat and pressure on old rock
Rock formed from the cementation and compaction of rock parts.
Rock formed inside the Earth
Rock formed outside the Earth
Fossils that are preserved parts or whole organisms, like teeth or insects in amber.
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