waves and technology

Waves

Carriers of energy that transfer energy through different media.

Longitudinal Waves

Waves that move in a compression motion, where particles of the medium move parallel to the direction of the wave.

Transverse Waves

Waves that move in a motion where particles of the medium move perpendicular to the direction of the wave.

Mechanical Waves

Waves that require a medium (solid, liquid, or gas) to travel through.

Electromagnetic Waves

Waves that do not require a medium and can travel through a vacuum.

Wave Model

A model used to describe features of waves, including frequency, period, wavelength, and speed.

Particle Model

A model used to explain the transmission of sound in different media (solids, liquids, gases).

Sound Waves

Waves that pass through the ear, allowing us to hear.

Visible Light

A form of electromagnetic radiation that can be seen by the human eye.

Electromagnetic Spectrum

The range of all types of electromagnetic waves, including visible light.

Reflection of Light

The bouncing back of light from surfaces, such as plane and curved mirrors.

Ray Diagrams

Diagrams used to locate images in mirrors and describe the path of light.

Refraction of Light

The bending of light as it passes from one medium to another of different optical density.

Optical Density

A measure of how much a medium can bend light.

Lenses

Optical devices that focus light, with different types serving various functions.

Scattering

The process by which light is spread out in different directions.

Dispersion

The separation of light into its component colors.

AM Radio Waves

Amplitude Modulated radio waves used for broadcasting.

FM Radio Waves

Frequency Modulated radio waves known for better sound quality.

Analogue Signals

Continuous signals that vary in amplitude or frequency.

Digital Signals

Discrete signals that represent information in binary form, offering advantages like noise resistance.

Coaxial Cable

A type of electrical cable used for transmitting data and signals.

Wireless Technology

Technology that allows communication without physical connections.

Optical Fibre Technology

Technology that uses light to transmit data over long distances.

Sound in Everyday Life

The role of sound in communication, navigation, and medical applications like ultrasound imaging.