Rotation and Revolution
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This document discusses the spinning and revolving motions of the Earth. It explains that the Earth rotates on its axis once every 24 hours, causing day and night. It revolves around the sun over the course of a year, causing seasonal variations due to changes in the sun's angle and day length. Rotation is an object spinning on its own axis, while revolution is an object spinning around another object. The Earth's rotation causes night and day, and its revolution around the sun causes the changing of seasons.
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This PPT describes the Inter-relation ship between the Earth, Moon and the Sun that explains the causes of Day and Night, Seasons on the Earth and the Tides in Oceans and Seas!
sunearthmoonsystem PPT notes.ppt
The document discusses the rotation and revolution of Earth and the Moon. It explains that Earth rotates on its axis every 24 hours, causing day and night. It revolves around the Sun in an elliptical orbit over the course of a year. The Moon revolves around Earth, causing the phases of the Moon as it reflects sunlight. The positions of Earth, Moon, and Sun cause solar and lunar eclipses periodically.
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The document is about Earth and the solar system. It contains the following key points:
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2. Earth is able to support life because it has an atmosphere, ideal temperature, and water.
3. The Earth rotates on its axis, causing day and night, and revolves around the Sun, causing seasons.
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Astronomy is the scientific study of matter in outer space. It involves observing the moon revolving around Earth and Earth revolving around the sun in an elliptical orbit. Earth's rotation causes day and night as it spins on its tilted axis, which also causes the seasons as different parts of Earth tilt toward or away from the sun throughout the year.
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Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
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Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
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Chapter 5
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Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
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2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
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Rotation and Revolution
- 1. Name: Shannon McLeod Date Submitted: August 11, 2014 ID: B.Ed. 3750
- 2. The spinning motion of an object on its axis
- 3. Tops, Ballerinas, Figure skaters, cyclones, Tornadoes, a merry-go-round, Earth
- 4. The movement of the earth on its axis over a 24 hour period. The speed of rotation 24,855 miles/24 hr or 1,038 miles/hr
- 5. Day and Night. ◦ As the earth rotates on the axis one half faces the sun, this half experiences day while the other half experiences night.
- 6. High and Low tides. This occurs when the earth spins and the sun and the moon pull it. One force is usually stronger than the other.
- 7. Wind speed and Direction Wind on earth comes from different direction (North, South, East and West). Different places would get stronger surge of wind as a result of the earths speed of rotation.
- 8. The movement of an object around another object
- 9. This is the movement of the earth around the sun. It takes 365 ¼ days (one year) The speed of earth’s revolution is about 18 miles per second. Earth revolves around the sun in a slightly eccentric elliptical orbit or path once a year
- 11. Every second, that you sit in this classroom, the Earth's orbital motion carries you about 18 miles through space.
- 12. Seasonal variations (varying lengths of day and night). Summer, Winter, Autumn and Spring. Solstices and Equinoxes
- 13. The “solstice” is the day of the year when sunlight is furthest north or south of the equator Our summer solstice occurs on June 21st, the first day of summer. Our winter solstice occurs on December 21st, the first day of winter
- 16. The “equinox” occurs twice a year when the sun is directly overhead at the equator On the equinox, the hours of daylight equals the hours of darkness. Seasons in the northern & southern hemispheres are opposite
- 17. Our vernal equinox occurs around March 21st, the first day of spring Our autumnal equinox occurs around September 21st, the first day of fall
- 20. What is the difference between rotation and revolution? Give me an example of something that revolves, and something that rotates. What type of movement causes night and day? What type of movement causes the change of seasons?
- 21. Rotation occurs when an object spins around an axis. Revolution occurs when an object spins around another object
- 24. The Earth’s revolution- the angle of the sun, and the length of the day