Waves (Light and Sound)
18 sections
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Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Waves transfer energy without permanently displacing the medium.
- Sound waves require a medium to travel, while light waves can move through a vacuum.
- The behavior and properties of waves, such as reflection, refraction, and diffraction, define their interactions in different contexts.
Key Concepts
- -- Mechanical Waves
- Waves that require a medium (solid, liquid, or gas) to travel, transferring energy through particle vibrations.
- -- Electromagnetic Waves
- Waves that do not require a medium, consisting of oscillating electric and magnetic fields, such as light and radio waves.
- -- Amplitude
- The maximum displacement from the rest position of a wave, indicating the energy carried.
- -- Wavelength
- The distance between two consecutive corresponding points of a wave that are in phase, such as crest to crest.
- -- Frequency
- The number of oscillations or cycles per unit time, determining the wave's pitch in sound.
- -- Refraction
- The bending of a wave as it passes between different media, resulting from a change in speed.
- -- Reflection
- The bouncing back of a wave when it encounters a boundary, changing its direction of travel.
- -- Diffraction
- The spreading out of waves when they pass through a narrow opening or around obstacles.
- -- Echo
- A reflected sound wave, perceived when the delay between the original sound and its reflection is sufficient.
- -- Electromagnetic Spectrum
- The range of all types of electromagnetic radiation, differing by wavelength and frequency.
Additional Learning Materials
Supplementary resources to enhance your learning experience.