Science Single Award - 4SS0 PearsonEdexcel

Properties Of Waves

Gbogbo ọrọ náà

Drop a stone into a still pond and something travels outwards across the surface, yet the water itself stays where it was. That is the strange and powerful idea at the heart of this topic: a wave moves energy and information from place to place without carrying any material with it.

In this lesson you will learn the vocabulary that describes every wave, from a ripple in a tank to a radio signal from a satellite, master the wave equation that links speed, frequency and wavelength, and see why every wave, without exception, can be reflected and refracted.

Ebumnobi

  1. Know the definitions of amplitude, wavefront, frequency, wavelength and period of a wave
  2. Know that waves transfer energy and information without transferring matter
  3. Know and use the relationship between the speed, frequency and wavelength of a wave: v = f x lambda
  4. Use the above relationships in different contexts including sound waves and electromagnetic waves
  5. Explain that all waves can be reflected and refracted

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

A seagull sitting on the sea bobs up and down as waves roll beneath it, but it does not get carried to the shore. A shout reaches your friend across a field, yet no air travels from your mouth to their ear. Sunlight crosses 150 million kilometres of empty space to warm your face. In every one of these cases something has clearly been transferred, and equally clearly it was not matter. That something is energy, and the mechanism is a wave.

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Nnyocha Ọmụmụ

Ekele diri gi maka imecha ihe karịrị na Properties Of Waves. 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.

  1. A wave transfers: A) matter only B) energy and matter C) energy and information but not matter D) information only Answer: C
  2. The amplitude of a wave is measured from: A) crest to trough B) crest to crest C) the rest position to a crest D) trough to trough Answer: C
  3. A wave has a speed of 12 m/s and a wavelength of 3 m. Its frequency is: A) 0.25 Hz B) 4 Hz C) 9 Hz D) 36 Hz Answer: B
  4. When a wave is refracted, the quantity that does NOT change is its: A) speed B) wavelength C) frequency D) direction Answer: C
  5. A wave has a period of 0.25 s. Its frequency is: A) 0.25 Hz B) 2 Hz C) 4 Hz D) 25 Hz Answer: C

Rue ajuju ndi a n'ime ngwa ahu

Rue ajuju ndi a n'ime ngwa ahu

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Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Properties Of Waves? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.

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