GCSE Astronomy Topic 1 Key Facts The Earth Eratosthenes first measured the circumference of the Earth accurately. He measured the altitude of the Sun North of a place where the Sun was at the zenith at exactly the same time. Knowing the distance and the angle one can work out the circumference. The Earth is a slightly flattened sphere with average diameter 13‚000km The Earth takes 23 hours 56 minutes to rotate. This is a sidereal day. The Earth is the only known planet with liquid water and a range
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Procedure of abortion is known since ancient times. The word abortion is came the Latin abortus where “ab” means “amiss” and “oriri” means “likely to be born‚ arise”. Along with infanticide it has existed in many societies‚ both primitive and advanced. The earliest records of an abortive technique go back about 4‚600 years to an ancient Chinese work‚ purportedly the work of Emperor Shen Nung which prescribes the use of mercury to induce an abortion. In ancient ages pessaries or vaginal suppositories
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NATSCI-1 (2:30 – 4:00 pm) Submitted by : Jennie Rose S. Almasan Submitted to : Prof.Landingin “ NASA’s WISE Finds Mysterious Centaurs May Be Comets” New observations from NASA’s NEOWISE project reveal the hidden nature of centaurs‚ objects in our solar system that have confounded astronomers for resembling both asteroids and comets. The centaurs‚ which orbit between Jupiter and Neptune‚ were named after the mythical half-horse‚ half-human creatures called centaurs
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Elan Footerman Dr. Frank SS155 4/9/13 Mayan Astronomy One of the monumental aspects of the Mayan Civilization was their interest in astronomy and the calendar. The Mayans made predictions in starwatching that are nearly as accurate as our calculations today. They were one of the first civilizations to show major advances in the study of the stars. It is likely that the reason the Mayans wanted to study the stars and other celestial bodies was so that they would be able to predict weather
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HISTORY OF ASTRONOMY Astronomy is the oldest of the natural sciences‚ dating back to antiquity‚ with its origins in the religious‚ mythological‚ and astrological practices of pre-history: vestiges of these are still found in astrology‚ a discipline long interwoven with public and governmental astronomy‚ and not completely disentangled from it until a few centuries ago in the Western World . In some cultures astronomical data was used for astrological prognostication. Ancient astronomers were able
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Introduction Mathematics is one of the fundamental tools in analyzing and understanding astronomy. Astronomers use mathematics to do basic conversion‚ calculate brightness‚ density and temperature and improve the understanding of astronomical images. Most ancient astronomers views celestial objects on behalf of gods. They studied celestial objects with the hope of discovering the unknown of the world. In ancient China‚ astronomer is an occupation that works for the imperial family. They determine
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would the world be like without astronomy? Many people would agree that the world would be put to a halt without it. Astronomy is one of the oldest forms of Physical Science‚ with its roots dating back as far as thousands‚ even millions of years ago. Astronomy contributed a lot to every civilization; it assisted people throughout history‚ it made up religion to most‚ while it also helped people determine when the correct time to begin planting. The beginning of Astronomy didn’t exactly begin with a telescope
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studied‚ and each place is different‚ in different ways. They are unique to themselves in different ways. While describing ancient societies‚ they have their own identities. They claim who they are differently; they deal with foreign people differently as well. Egypt‚ Assyria‚ Persia‚ Greece‚ Macedonia‚ Rome‚ and Carthage all identified themselves differently. The Egyptian people were unique when studying a defined portion of them. They made themselves different than their neighbors as a result they
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stars (that�s why it is not 29.5 days) Period of rotation around its internal axis 27.322 days The lunar �day� Phases of the Moon ?? Where�s the Sun in this picture? At any time‚ half of the Moon is illuminated by the Sun. At any time‚ half of the Moon is visible to us. Phase Terminology: Waxing Growing larger (looks like curve of �D�) Waning Growing smaller (looks like �C�) Grows or shrinks from the right (thanks to Michael
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University of Phoenix Material Basics of Astronomy Outline Complete the outline following the instructions above. Use the example as a guide‚ using complete sentences for all subpoints. 1. Our place in the universe a. The modern view of the universe 1) What is our Sun and what is its role in the solar system? a) The sun is the closest star to earth and makes up 98% of the solar system mass. b) The sun is made up of the hydrogen‚ helium‚ calcium‚ sodium‚ magnesium‚ and iron elements
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