Thermal transfer

Question 1

Conduction

Answer 1

Conduction is the transfer of heat through a material or between materials that are in direct contact. In conduction, thermal energy is transferred from regions of higher temperature to regions of lower temperature through molecular collisions.

eg : Consider a metal rod with one end placed in a flame. As the flame heats the end of the rod, thermal energy is transferred through the rod via conduction.

Question 2

Convection

Answer 2

Convection is the transfer of heat through the movement of a fluid (liquid or gas). It occurs when warmer fluid rises and cooler fluid sinks, creating a circulation pattern known as a convection current.

eg: Imagine a pot of water being heated on a stove. As the water is heated, convection currents are set up within the liquid.

Question 3

Radiation

Answer 3

Radiation is the transfer of heat through electromagnetic waves, such as infrared radiation.

eg: Consider a person standing in front of a campfire, feeling the warmth of the fire on their skin.

Question 4

Temperature

Answer 4

temperature is a measure of how hot or cold an object or substance is.

Temperature is measured using various scales, with the most common ones being Celsius (°C) and Fahrenheit (°F). In scientific contexts, the Kelvin (K) scale is often used