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Physic’s Activities during the first semesterere

Physic’s Activities during the first semesterere. 2006-2007 Grade 11 Advance &Foundation Prepared by :Rania AL-Qaissi. Conservation of energy. 11 A.27.2

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Physic’s Activities during the first semesterere

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  1. Physic’s Activities during the first semesterere 2006-2007 Grade 11 Advance &Foundation Prepared by :Rania AL-Qaissi

  2. Conservation of energy • 11 A.27.2 • Define kinetic and potential energy. Give examples of different forms of energy and their Interco version by transducers of various kinds, and classify them as potential or kinetic. Describe the principle of energy conservation and apply it to simple examples. • Done by: Reham Mohamed. Hend Zoheer. • Supervised by: Rania Al-Qaissi.

  3. Conservation of energy • 11A.27.2 • Define kinetic and potential energy. Give examples of different forms of energy and their Interco version by transducers of various kinds, and classify them as potential or kinetic. Describe the principle of energy conservation and apply it to simple examples. • Done by : Alla Mohamed Moneera Mohamed. • Supervised by: Rania Al-Qaissi.

  4. Transformation of energy • 11A.27.4 • Know that in practical systems energy loss, particularly in the form of waste heat, always occurs and use the concept of efficiency to solve problems. Calculate conversion efficiencies relating energy input to useful energy output. • Done by: Fatema Adel Moneera Mohamed. • Supervised by: Rania Al-Qaissi.

  5. Convection Current • 11A.28.4 • Know the causes of convection currents in air and water and understand how these can affect climate and weather. • Done by: Doaa Ameen • Supervised by: Rania AL-Qaissi.

  6. How does the boiler work ? • 11A.28.3 • Know that heat is transferred by conduction, convection and radiation. Explain conduction and convection in terms of particle movement. • Done by : Nora Jaman • Supervised by: Rania AL-Qaissi.

  7. Convection current • 11 A.28.3 • Know that heat is transferred by conduction, convection and radiation. Explain conduction and convection in terms of particle movement. • Done by: Basmma Mohamed • Supervised by: Rania AL-Qaissi.

  8. Thermometers • 11A.28.1 • Define temperature and explain how a temperature scale is constructed. Know how different types of thermometer work and list their advantages and disadvantages. • Done by: Samah Hisham. • Supervised by : Rania Al-Qaissi.

  9. Student’s Presentations

  10. Waves and Vibrations DONE BY: Alaa Mohd Reda Mosa ALZaabi Class: 2/5 Teacher: Rania

  11. a wave is a disturbance that travels through a medium from one location to another. • a wave is the motion of a disturbance What is a wave?

  12. General Wave Properties Done By:Moza Ali Al-Meri Teacher : Rania Al-Qaissi.

  13. RADIO WAVES • 10 cm- 100,000+m  in length • Only cosmic waves the reach the surface of the Earth • Cause of noise • Divided into smaller frequency dependent groups called bands   • Used for communications • Sources:  transmitters and sparks from motors

  14. MICROWAVES • 1 mm-1 dm in length • Absorbed by water molecules – how microwave ovens heat food • Used in telecommunications and power transmission • Sources:  electric circuits, many stars, microwave ovens

  15. INFRARED • Thought of as heat but is not always • Far infrared energy is heat energy. • All objects that have warmth radiate infrared waves • Easily absorbed and re-radiated.  • Used in remote controls,  surveillance, therapy of muscles • Sources:  Humans, the sun

  16. X-RAYS • Emitted when an electron moves from certain excited states back down to its ground state, or when an electron that is moving very quickly is suddenly stopped • Two groups - long wavelength (soft x-rays) and shorter wavelength (hard x-rays) • Used for radiography (x-ray photography) and to look at materials in industry for defects • Sources:  emitted by heavy atoms after bombardment by an electron

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