General Properties Of Waves
Gbogbo ọrọ náà
Waves carry energy across a room, an ocean or the empty space between stars, yet they leave the matter they pass through more or less where it was. Ripples on a pond, a sound across a hall and light from the Sun are all waves obeying the same handful of rules.
In this lesson you will learn the vocabulary of waves (wavefront, wavelength, frequency, crest, trough, amplitude and wave speed), use the wave equation \(v=f\lambda\) to link them, and see what makes a wave transverse. These ideas underpin everything that follows about light, sound and the electromagnetic spectrum.
Ebumnobi
- [Core] Know that waves transfer energy without transferring matter
- [Core] Describe what is meant by wave motion as illustrated by vibration (oscillation) in ropes and springs and by experiments using water waves
- [Core] Describe the features of a wave in terms of wavelength, frequency, crest (peak), trough, amplitude and wave speed
- [Core] Describe how waves can undergo: (a) reflection at a plane surface (b) refraction due to a change of speed
- [Core] Recall and use the equation for wave speed v = f λ
- [Supplement] Know that for a transverse wave, the direction of vibration is at right angles to the direction of propagation and understand that electromagnetic radiation, water waves and seismic S-waves (secondary) are transverse
- [Supplement] Know that for a longitudinal wave, the direction of vibration is parallel to the direction of propagation and understand that sound waves and seismic P-waves (primary) are longitudinal
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na General 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.
- A wave has frequency 20 Hz and wavelength 0.5 m. Its speed is: A. 0.025 m/s B. 10 m/s C. 40 m/s D. 20.5 m/s Answer: B
- The amplitude of a wave is the: A. distance crest to trough B. maximum displacement from rest C. distance crest to crest D. number of crests per second Answer: B
- Which quantity is measured in hertz? A. wavelength B. amplitude C. frequency D. wave speed Answer: C
- In a transverse wave the vibration is: A. along the direction of travel B. at right angles to the direction of travel C. in a circle D. zero Answer: B
- A wave of speed 12 m/s has frequency 3 Hz. Its wavelength is: A. 0.25 m B. 4 m C. 9 m D. 36 m Answer: B
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara General Properties Of Waves? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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