Light And Sound
Bayani Gaba-gaba
A straw looks broken where it enters a glass of water. A shout comes back off a distant wall a moment after you make it. A single strand of glass thinner than a hair carries a television channel across an ocean. All three are the same two ideas at work: waves bounce, and waves bend.
This lesson takes reflection and refraction from the ray box on the bench to the fibre under the sea. You will learn the law of reflection, investigate refraction through three different shapes of block, meet the critical angle, and see why sound behaves in exactly the same two ways as light.
Manufura
- Know that light waves can be reflected and refracted
- Use the law of reflection (the angle of incidence equals the angle of reflection)
- Investigate the refraction of light, using rectangular blocks, semi-circular blocks and triangular prisms
- Describe the role of total internal reflection in transmitting information along optical fibres and in prisms
- Explain what is meant by critical angle
- Know that sound waves can be reflected and refracted
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
Bude taswirar tunani a cikin manhaja
Katunan tunawa
Gwaji mai sauri kan abin da ake jarraba a wannan batu.
Yi atisayen wadannan katuna a cikin manhaja
Takardar Darasi
Cikakken Bayanin Darasi Yana Kan Manhajar Green Bridge
Sami manhajar Green Bridge CBT a wayarka ko kwamfutarka domin cikakken laburaren IGCSE: takardun jarrabawar baya, tsarin kimantawa, taswirar tunani, katunan karatu da darussan sauti.
Nazarin Darasi
Barka da kammala darasi akan Light And Sound. Yanzu da kuka bincika mahimman ra'ayoyi da ra'ayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- The law of reflection states that: A) the angle of incidence is twice the angle of reflection B) the angle of incidence equals the angle of reflection C) the angle of reflection is measured from the surface D) the angle of reflection is always 90 degrees Answer: B
- A ray of light passes from air into glass. It bends: A) away from the normal B) towards the normal C) not at all D) back along its original path Answer: B
- Total internal reflection can occur when light travels: A) from air into glass at any angle B) from glass into air below the critical angle C) from glass into air above the critical angle D) from air into glass above the critical angle Answer: C
- A ray of light strikes a mirror at 20 degrees to the mirror surface. The angle of reflection measured from the normal is: A) 20 degrees B) 40 degrees C) 70 degrees D) 90 degrees Answer: C
- A ray enters a semi-circular block aimed at the centre of the flat face. At the curved surface it: A) bends towards the normal B) bends away from the normal C) does not bend, because it travels along the normal D) is totally internally reflected Answer: C
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
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Sashen littafi
Refraction
Explain refraction at media boundaries, predict the path of light after passing through a boundary (Snell’s law), describe the index of refraction of materials, explain total internal reflection, and describe applications of refraction and total internal reflection
"Physics: Refraction" 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/16-2-refraction. Access for free at https://openstax.org/books/physics/pages/1-introduction
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Sashen littafi
Reflection
Explain reflection from mirrors, describe image formation as a consequence of reflection from mirrors, apply ray diagrams to predict and interpret image and object locations, and describe applications of mirrors
"Physics: Reflection" 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/16-1-reflection. Access for free at https://openstax.org/books/physics/pages/1-introduction
Wasu ƙungiyoyi ne suka wallafa su ƙarƙashin lasisin buɗe, kuma muna ambaton su yadda suka nema. Hanyoyin suna buɗe shafukansu.
Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Light And Sound? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
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