P1 topic 1 - Changing Ideas About The Solar System
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P1 Topic 1 - Changing Ideas About The Solar System: Edexcell GCSE Science -> Higher -> Core Science -> P1 -> Topic 1 -> Changing ideas about the solar system 1st in the P1 Topic 1 series - Contains everything you need to know from the specification* - Specially designed for triple and dual science GCSE - A good teaching tool - A good revision tool - Compliments the CGP revision books *From Edexcell GCSE Science from 2011 specification, suitable for 2014 & 2015 exams Contains detailed notes and questions that may come up in the exams. Please comment with your views or any questions that you may have.
Transcript of P1 topic 1 - Changing Ideas About The Solar System
P1 TOPIC 1 - VISIBLE LIGHT AND THE SOLAR SYSTEM
Changing Ideas of The Solar System
CVHS GCSE POWERPOINT SHARE
Friday, 11 April 14
Geocentric ModelAncient Greek astronomers believed that the earth was at the centre of the universe.
They believed that everything (sun, moon, planets and stars) all orbited the earth in perfect circles.
The geocentric model was accepted up until the 1500s.
Copernicus published a book in 1543, which introduced the Heliocentric model of the universe.
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Heliocentric Geocentric
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Heliocentric ModelEarth and planets orbit around the sun in perfect circles
Copernicus’ ideas weren’t popular and he was condemned by the church
Galileo had good evidence for this theory...
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Galileo’s EvidenceIn 1610, Galileo observed Jupiter's moons (using a newly inverted telescope)
He found that they had moved the ‘wrong way’ around the Earth, and later he saw one go behind Jupiter, and another one appear.
These obviously orbited Jupiter, not the Earth.
Therefore, not everything orbited the Earth.
This proved the geocentric model wrong!
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QuestionsWhen was the Heliocentric model first introduced, and by who? (2)
Describe the geocentric model of the universe (3)
Compare the differences of the Geocentric and Heliocentric models of the universe (2)
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Modern DayPlanets orbit the sun.
Elliptical orbits, rather than perfectly circular.
Discovery of new planets, such as uranus, with the technology advances in telescopes.
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QuestionsWhat do we know about orbits in the modern day (2)
Explain how ideas about the solar system have changed from the time of the ancient greeks up until the modern day (6)
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