20 Questions
Which scientist proposed that the Earth began on the 21st of September 4004BC?
James Ussher
Which scientific concept emphasizes that the earth’s present processes are key to understanding its past development?
Uniformitarianism
Who proposed that the Earth is 20-40 million years old based on estimates of size and shape leading to cooling time?
William Thomson Lord Kelvin
Based on the text, which scientist's research led to the conclusion that the oldest rocks on Earth are in the centre of the largest continents?
O’Neil et al. 2008
What major event marked the beginning of the universe, according to Edward Hubble?
The Big Bang
Which process led to the formation of a very high proportion of existing atoms during the first 30 minutes of the universe?
Nuclear fusion
What plays a crucial role in the chemistry of life, as mentioned in the text?
Oxygen and hydrogen
What was responsible for causing axis tilt, rate of rotation, and direction of spin on Earth, according to the text?
Meteorite collisions
What did Clair Patterson use to perform absolute dating of radioactive matter?
Magma ocean
What process led to the formation of Earth's core, as mentioned in the text?
What factors are required for building DNA?
Energy, amino acids, catalysts, chemical concentration, protection from radiation, and excess heat
Where did the Impact theory suggest the building blocks of life arrived from?
Meteorites
What is the age of the oldest existing rocks in the Universe?
14 billion years
What emerged during the Cambrian period?
Explosion of the fossil record
What is thought to have covered the Earth completely twice in its history?
Ice
What type of environment did the early Pre-Cambrian fossils indicate?
Anaerobic
What is the oldest type of rock in Scotland?
Gneiss
What process created the Pre-Cambrian rocks of Scotland?
Caledonian Orogeny
What are the oldest rocks in Scotland made up of?
Archean and lower Proterozoic gneiss
Where did the Urey Miller Experiment create a small-scale early earth atmosphere?
Laboratory
Explore the historical perspectives on the age of the Earth, from James Ussher's biblical calculations to the development of uniformitarianism and estimates by Lord Kelvin. Understand the shift in scientific understanding about the Earth's age over time.
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