Week 2 Theory Lesson
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Eratosthenes was a Greek mathematician who lived around 200 BC. He disagreed with the belief that the Earth was flat and set out to scientifically prove that it was round. He is known for being the first person to calculate the circumference of the Earth, providing proof that the Earth is spherical rather than flat. This was an important early scientific demonstration that helped establish the true shape of the Earth.
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one accident greek scientist, Aristarchus,had a theory about the layout of the universe
one accident greek scientist, Aristarchus,had a theory about the layout of the universe
one accident greek scientist, Aristarchus,had a theory about the layout of the universe
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Solution
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In all ages of recorded history, human beings around the world have asked fundamental questions. Why are we here? Why does the universe exist? What is truth? How do we distinguish knowledge from opinion, reality from illusion, right from wrong? What is justice? Universal questions like these are fundamental in the sense that the answers we give to many other questions depend on the answers we have already given to these. The “fundamental questions of life,” as they are sometimes called, are important because the answers we give form the foundation of our worldview—our general understanding of the universe and our role within it. And whether we realize it or not, the choices we make in life all reflect, to one degree or another, our worldview.
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XOne ancient Greek scientist, Aristarchus, had a theory about the layout of the universe that was quite different from the other Greek theories. According to Aristarchus\'s theory, A) the sun is at the center and other objects, including Earth, move around the sun in simple circles B) the Earth is held up by Hercules, who stands on a turtle, who stands on an elephant, who stands on Zeus, who is beginning to think that the whole thing isn\'t worth the effort. C) there is no fixed center anywhere in the universe D) Earth is at the E) Earth is at the center, and the planets move around Earth in orbits that could be described center and other objects move around Earth in simple circles. as \"circles-within-circles\" or \"loop-the-loops.\"
Solution
(a) Aristarchus of Samos
He proposed helicocentrism which means sun at the center of the universe
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Copyright by Paul Herrick, 2020. For class use only. Not for distribution. The chapters you are about to read online this quarter are excerpted from a textbook that will be published later this year. This chapter: 28 pages of reading.
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In all ages of recorded history, human beings around the world have asked fundamental questions. Why are we here? Why does the universe exist? What is truth? How do we distinguish knowledge from opinion, reality from illusion, right from wrong? What is justice? Universal questions like these are fundamental in the sense that the answers we give to many other questions depend on the answers we have already given to these. The “fundamental questions of life,” as they are sometimes called, are important because the answers we give form the foundation of our worldview—our general understanding of the universe and our role within it. And whether we realize it or not, the choices we make in life all reflect, to one degree or another, our worldview.
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- Anaxagoras observed circular shadows on the Moon during lunar eclipses, indicating the Earth was round.
- Aristotle made detailed arguments including that the North Star appears higher in the sky the farther north you travel, and ships disappear over the horizon progressively from bottom to top.
- Eratosthenes calculated the circumference of Earth by measuring the sun's angle at different locations, arriving at a value close to modern measurements.
Prelims - 4th Pauling Memorial Inter-School Science Quiz (2018)
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Dacota_blue: What is science?
Biology is the science of life. Some key applications of biology include:
1. Medicine - Understanding biology helps advance fields like genetics, immunology, pharmacology to treat and prevent diseases.
2. Agriculture - Applying biological concepts to fields like plant breeding, crop science, soil science, and animal husbandry helps improve food production.
3. Biotechnology - Using biological processes like fermentation or genetic engineering to develop useful products like drugs, fuels and materials.
4. Conservation biology - Studying biodiversity and ecosystems informs efforts to protect endangered species and habitats.
5. Forensics - Biological analysis in forensics helps identify suspects, determine causes of death and solve crimes.
6. Environmental science
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Week 2 Theory Lesson
- 1. Eratosthenes Theory Science Year 5 Week 2
- 2. Background A Greek mathematician and astronomer named Eratosthenes lived around 200BC He once had a debate with a person who was of the belief that the Earth was flat. Eratosthenes disagreed and set about to scientifically prove his point that the Earth was in fact round He is best known for being the first person to calculate the circumference of the Earth which was scientific proof that the Earth in fact was not flat
- 3. ‘But it looks flat’ Comic
- 4. Response… How did the characters use information in their world to form their ideas? Why did the characters disagree? What did Eratosthenes suggest when they
- 5. Response… Why do you think the companion listened to eratosthenes’ idea? What evidence do we have now that would further support Eratosthenes’s ideas?
- 6. Discussion Scientific knowledge is a set of claims made by scientist based on observations and evidence.
- 7. Discussion 100’s of years ago there was a major debate about whether the Sun orbited the Earth or the Earth orbited the Sun
- 8. ‘Debating Our Place’ Think about each claim, which is correct? Why have you chosen that claim?
- 9. ‘Debating Our Place’ What we THINK we know What we WANT to learn What we LEARNED HOW we know Claim 1 The moon and the sun both circle the Earth Claim 2 The moon circles the Earth while the Sun circles them both Claim 3 The moon circles the Earth while the Earth circles the Sun Sun Moon Earth
- 10. ‘Relationship between the Sun, Moon and Earth’ They all spin on their axis clockwise. The Moon orbits the Earth once daily which takes 24 hours. The Earth orbits the Sun once yearly which takes 365 days. The side of the Earth that is facing the Sun is day time and the side of the Earth facing away from the Sun is night time. This is how we get night and day.
Editor's Notes
- This is about Eratosthenes, (pronounced Error – Toss – The – Knees)
- Background information into the man that calculated that the world was not flat (He worked out the circumference of the Earth)
- Eratosthenes (on the right) and his companion (on the left). Refer to the comic that was attached to the email
- Look at attached document (claim)
- Please recreate this document in a word document and we will be adding to it in future science lessons
- Please copy the following underneath the table you created from the previous slide in a word document.