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  2. What are the contribution of Aristotle to astronomy? - Socratic

    socratic.org/questions/what-are-the-contribution-of-aristotle-to-astronomy

    Answer link. Aristotle contributed a geocentric model for the universe, in 4C BC.with Moon, Mercury, Venus, Sun, Mars, Jupiter and Saturn moving around the Earth, with fixed stars beyond. This model was superseded by Aristarchus' heliocentric model, a century later. It is pertinent to mention that philosopher Aristotle was not a scientist.

  3. Dalton, Thomson, Rutherford, Mendelevium, Bohr and ...

    socratic.org/questions/what-are-the-scientists-dalton-thomson-rutherford...

    They all contributed to the chemistry and physics world 1. Dalton - is known for his atomic theory A. Dalton's Atomic Theory - matter is made of atoms and they are indivisible and indestructable - all atoms of the same element are identical in mass and properties -compounds are made by the combination of 2 or more different atoms. - a chemical reaction is the rearrangement of atoms Thomson ...

  4. Taxonomy - Biology - Socratic

    socratic.org/biology/taxonomy-and-systematics/taxonomy

    What is taxonomy? Aristotle contributed to the science of taxonomy when he classified animals into how many groups? How is taxonomy used to determine closely two organisms are related? The best videos and questions to learn about Taxonomy. Get smarter on Socratic.

  5. What was Aristotle's theory of the universe? - Socratic

    socratic.org/questions/what-was-aristotle-s-theory-of-the-universe

    In Aristotle world the earth is composed of four elements: Earth, Water, Fire and Air. It is at the center and it does not revolve around anything else or rotate around its own axis. It is surrounded by ten concentric spheres made of a perfectly transparent substance known as "quintessence." These spheres revolve around the earth, carrying the other celestial bodies: 1) Moon 2) Mercury 3 ...

  6. What were Galileo's contributions to astronomy? | Socratic

    socratic.org/questions/what-were-galileo-s-contributions-to-astronomy

    Galileo refined the concept of a telescope and was able to make telescopes with more than 30x magnification. He used his telescope to make significant discoveries. Perhaps the most significant discovery at the time was the four major moons of Jupiter, Io, Europa, Ganymede and Callisto. This completely went against Aristotle's principles that ...

  7. How did Ptolemy's model account for retrograde motion?

    socratic.org/questions/how-did-ptolemy-s-model-account-for-retrograde-motion

    1 Answer. Ptolemy included epicycles in his orbits. Ptolomy's model of the solar system was geocentric, where the sun, moon, planets, and stars all orbit the earth in perfectly circular orbits. The problem with perfectly circular orbit around the Earth is that they do not explain the occasional backward motion, or retrograde motion, of the planets.

  8. What did Ptolemy and Aristotle both think about the planets ... -...

    socratic.org/questions/what-did-ptolemy-and-aristotle-both-think-about-the...

    Aristotle lived from 384-322 BC and Ptolemy from 90-168 AD. Their vision of the nature of the heavens expanded far and wide (primarily due to Aristotle being Alexander the Great's tutor, so as Hellenic thought spread throughout the world, so too did Aristotle's ideas). So widely did these ideas pervade that the Christian Church picked up on ...

  9. How is Thomson's model of an atom different from Dalton's model?

    socratic.org/questions/how-is-thomson-s-model-of-an-atom-different-from-dalton...

    The Plum Pudding Model is a model of atomic structure proposed by J.J. Thomson in the late 19th century. Thomson had discovered that atoms are composite objects, made of pieces with positive and negative charge, and that the negatively charged electrons within the atom were very small compared to the entire atom.

  10. Major and Minor Resonance Structures - Organic Chemistry -...

    socratic.org/organic-chemistry-1/resonance/major-and-minor-resonance-structures

    Truong-Son N. · 1 · Nov 16 2015. Resonance forms are ways of arranging pi electrons (double bonds, lone e-) in a molecule. Often resonance forms are unequal in energy. Major resonance forms are the more stable resonance form of a molecule that is more commonly occuring while the minor resonance structure is often less stable and therefore ...

  11. What is a major resonance contributor? + Example - Socratic

    socratic.org/questions/what-is-a-major-resonance-contributor

    The major contributor is I. Example 2 You can write two structures for the conjugate acid of formaldehyde. The first structure is the major contributor, because every atom has a complete octet. This is despite the fact that the positive charge is on the more electronegative O atom. Example 3 We can write two contributors for the conjugate base ...