Properties Of Waves
Akopọ
Every sound you hear, every colour you see and every mobile signal your phone picks up travels as a wave. Waves are one of the most universal ideas in physics, connecting topics from music and medicine to earthquakes and astronomy. Understanding their basic properties unlocks a huge part of the Edexcel specification.
In this topic you will learn how to classify waves as transverse or longitudinal, define the quantities that describe any wave, and use the wave equation to link speed, frequency and wavelength. You will also meet the Doppler effect and see how all waves can be reflected and refracted when they meet a boundary.
Awọn Afojusun
- Explain the difference between longitudinal and transverse waves
- Know the definitions of amplitude, wavefront, frequency, wavelength and period of a wave
- Know that waves transfer energy and information without transferring matter
- Know and use the relationship between the speed, frequency and wavelength of a wave: wave speed = frequency x wavelength, v = f x lambda
- Use the relationship between frequency and time period: frequency = 1 / time period, f = 1 / T
- Use the above relationships in different contexts, including sound waves and electromagnetic waves
- Explain why there is a change in the observed frequency and wavelength of a wave when its source is moving relative to an observer and that this is known as the Doppler effect
- Explain that all waves can be reflected and refracted
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Oriire fun ipari ẹkọ lori Properties Of Waves. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
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- In a transverse wave, the vibrations are: A) Parallel to the direction of energy transfer B) Perpendicular to the direction of energy transfer C) In the same direction as the wave speed D) Along the length of the medium only Answer: B
- What does the amplitude of a wave measure? A) The distance between two consecutive peaks B) The maximum displacement from the equilibrium position C) The number of waves per second D) The speed of the wave Answer: B
- A wave has a frequency of 250 Hz and a wavelength of 1.32 m. What is the speed of the wave? A) 189 m/s B) 330 m/s C) 495 m/s D) 660 m/s Answer: B
- Which of the following is an example of a longitudinal wave? A) Light B) A ripple on water C) Sound D) An X-ray Answer: C
- As an ambulance drives towards you, its siren appears to have: A) A lower frequency and longer wavelength B) A higher frequency and shorter wavelength C) The same frequency but a different amplitude D) A higher speed and higher frequency Answer: B
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Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Wave Properties: Speed, Amplitude, Frequency, and Period
Define amplitude, frequency, period, wavelength, and velocity of a wave
"Physics: Wave Properties: Speed, Amplitude, Frequency, and Period" 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/13-2-wave-properties-speed-amplitude-frequency-and-period. Access for free at https://openstax.org/books/physics/pages/1-introduction
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Abala ìwé ẹ̀kọ́
Types of Waves
Define mechanical waves and medium, and relate the two
"Physics: Types of Waves" 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/13-1-types-of-waves. Access for free at https://openstax.org/books/physics/pages/1-introduction
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