Science Single Award - 4SS0 PearsonEdexcel

Properties Of Waves

Muhtasari

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.

Malengo

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: v = f x lambda
Use the above relationships in different contexts including sound waves and electromagnetic waves
Explain that all waves can be reflected and refracted

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Maelezo ya Somo

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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Tathmini ya Somo

Hongera kwa kukamilisha somo la Properties Of Waves. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.

Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.

Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.

A wave transfers: A) matter only B) energy and matter C) energy and information but not matter D) information only Answer: C
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
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
When a wave is refracted, the quantity that does NOT change is its: A) speed B) wavelength C) frequency D) direction Answer: C
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

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Vitabu Vinavyopendekezwa

Pearson Edexcel International GCSE (9-1) Science Double Award Student Book

Manukuu: First edition

Mchapishaji: Pearson Education

Mwaka: 2018

ISBN: 978-0-435-19150-8

Maelezo: Endorsed student book covering the full 4SD0 specification across Biology, Chemistry and Physics.

Jifunze zaidi kutoka vyanzo huria

Sehemu ya kitabu Wave Properties: Speed, Amplitude, Frequency, and Period OpenStax · Physics
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
Sehemu ya kitabu Types of Waves OpenStax · Physics
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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