y8 phy myt

Flashcards summarizing key concepts related to heat expansion in solids, liquids, gases, light behavior, and phenomena such as refraction and total internal reflection.

Heat Expansion - Solid

When metal is heated, its temperature increases, causing its volume to increase and density to decrease due to the gain in kinetic energy of particles.

Bimetallic Strip

A strip made of two different metals that expand at different rates when heated, causing it to bend.

Thermostat

A device that uses the bending of a bimetallic strip to control air conditioning and regulate temperature.

Special Characteristic of Water

Water expands when the temperature drops from 4°C to 0°C, making it less dense and allowing ice to float.

Conduction

Heat transfer that occurs through neighboring particles in solids.

Convection

Heat transfer through fluid, where hot air rises and cold air sinks.

Radiation

Heat transfer that does not require a medium and can travel through a vacuum.

Evaporation

The process where heat is transferred from the surface of a liquid, allowing particles to escape and become a gas.

Luminous Object

An object that produces light, such as the Sun.

Refraction

The bending of light as it travels from one medium to another, affecting its speed and direction.

Total Internal Reflection

The phenomenon where light is completely reflected within a medium when it hits the boundary at a critical angle.

Dispersion

The separation of light into its component colors due to different wavelengths being refracted at different angles.