Transfer Of Thermal Energy (continued)
Gbogbo ọrọ náà
A metal spoon left in a hot drink soon burns your fingers, warm air rises from a radiator to fill a room, and you feel the Sun's heat across empty space. These are the three ways thermal energy travels: conduction, convection and radiation. Knowing which one is at work, and often more than one at once, lets you explain almost every heating and cooling effect around you.
In this lesson you will explain everyday applications of conduction, convection and radiation, from cooking pans to heating a room. You will describe experiments that distinguish good and bad emitters and absorbers of infrared radiation, see how surface temperature and area control the rate of radiation, and explain complex cases such as a coal fire and a car radiator where more than one transfer matters.
Ebumnobi
- Explain some of the basic everyday applications and consequences of conduction, convection and radiation, including: (a) heating objects such as kitchen pans (b) heating a room by convection
- [Supplement] Describe experiments to distinguish between good and bad emitters of infrared radiation
- [Supplement] Describe experiments to distinguish between good and bad absorbers of infrared radiation
- [Supplement] Describe how the rate of emission of radiation depends on the surface temperature and surface area of an object
- [Supplement] Explain some of the complex applications and consequences of conduction, convection and radiation where more than one type of thermal energy transfer is significant, including: (a) a fire burning wood or coal (b) a radiator in a car
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Transfer Of Thermal Energy (continued). Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Which method of thermal energy transfer can take place through a vacuum? A. conduction B. convection C. radiation D. none of these Answer: C
- A saucepan handle is made of plastic mainly because plastic is a A. good conductor B. good emitter C. poor conductor D. good absorber Answer: C
- Warm air rises from a heater because, when heated, the air becomes A. more dense B. less dense C. heavier D. cooler Answer: B
- Which surface is the best emitter of infrared radiation? A. shiny silver B. shiny white C. dull black D. polished metal Answer: C
- The rate at which an object emits radiation increases if its A. surface temperature falls B. surface area decreases C. surface temperature rises D. colour becomes shinier Answer: C
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
-
Akụkụ akwụkwọ
Heat, Specific Heat, and Heat Transfer
Explain heat, heat capacity, and specific heat
"Physics: Heat, Specific Heat, and Heat Transfer" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/physics/pages/11-2-heat-specific-heat-and-heat-transfer. Access for free at https://openstax.org/books/physics/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Transfer Of Thermal Energy (continued)? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
Budata Ngwa Ahụ Na Google Playstore
Ihe nile ichoro iji nwee ihe ịga nke ọma na JAMB, WAEC & NECO.
