Radiation
What is radiation?
The transfer of heat through electromagnetic waves.
What is conduction?
The transfer of heat through direct contact between materials.
What is convection?
The transfer of heat through fluid (liquid or gas) movement.
Give an example of radiation in everyday life.
The warmth felt from the sun on your skin.
Give an example of conduction.
A metal spoon getting hot when placed in a hot soup.
Describe how convection works in a pot of boiling water.
Hot water rises, cools, and then sinks, creating a circular motion.
How does radiation differ from conduction and convection?
Radiation does not require a medium; it can occur in a vacuum.
Why do metals conduct heat better than wood?
Metals have more free electrons that transfer energy quickly.
Why is convection important in weather patterns?
It helps distribute heat in the atmosphere, affecting wind and temperature.
What type of heat transfer occurs in space?
Radiation, because there is no air in space.
What happens to a pan on a hot stove?
Heat is conducted from the stove to the pan.
Give an example of convection in the ocean.
Ocean currents that circulate warm and cold water.
What is the role of radiation in heating the Earth's surface?
It warms the Earth by transferring heat from the sun.
How does conduction affect temperature in solids?
It allows heat to spread through the solid material, raising its temperature.
How does convection differ from conduction and radiation?
Convection involves the movement of fluids, while conduction is through solids and radiation through waves.