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... temperature would be 260 K, ONLY 30 degrees lower on average, BUT oceans would freeze !! ...
Plate Tectonics Crossword Puzzle
Plate Tectonics Crossword Puzzle

... 2. the theory of ____ states within time, the continents, including the ocean, move around the Earth's surface 4. a ____ is long, narrow steep-sided depression into the Earth's crust 7. ____ boundaries is where two plates slide against each other in a sideways motion 8. a ____ sometimes move, float, ...
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Earth`s History in Fossils - PAMS

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Spheres glossary quiz - HSIE Teachers

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... and effects in all ages have been only and always the same as those which we observe today. Reason: Evolutionists assume uniformitarianism because it is essential for their system. An evolutionist needs an old earth to support his theory that there is evolution from one species to another. Most evol ...
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... The sun, the earth, and the rest of the solar system formed from a nebular cloud of dust and gas 4.6 billion years ago. The early earth was very different from the planet we live on today. Geologic time can be estimated by observing rock sequences and using fossils to correlate the sequences at vari ...
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Age of the Earth



The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This age is based on evidence from radiometric age dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.Following the development of radiometric age dating in the early 20th century, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old.The oldest such minerals analyzed to date—small crystals of zircon from the Jack Hills of Western Australia—are at least 4.404 billion years old. Comparing the mass and luminosity of the Sun to those of other stars, it appears that the Solar System cannot be much older than those rocks. Calcium-aluminium-rich inclusions – the oldest known solid constituents within meteorites that are formed within the Solar System – are 4.567 billion years old, giving an age for the solar system and an upper limit for the age of Earth.It is hypothesised that the accretion of Earth began soon after the formation of the calcium-aluminium-rich inclusions and the meteorites. Because the exact amount of time this accretion process took is not yet known, and the predictions from different accretion models range from a few millions up to about 100 million years, the exact age of Earth is difficult to determine. It is also difficult to determine the exact age of the oldest rocks on Earth, exposed at the surface, as they are aggregates of minerals of possibly different ages.
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