Conduction
What is conduction?
The transfer of heat through direct contact between materials
What is convection?
The transfer of heat through the movement of fluids (liquids and gases).
What is radiation?
The transfer of heat through electromagnetic waves without needing a medium.
Give an example of conduction in everyday life.
Touching a hot stove and feeling the heat through your hand.
Describe how convection currents work in a pot of boiling water.
Hot water rises to the top while cooler water sinks, creating a circular motion.
Give an example of radiation in everyday life.
Feeling the warmth of the sun on your skin.
What materials are best conductors of heat?
Metals like copper and aluminum.
Name a common example of convection in the atmosphere.
Wind, which is caused by warm air rising and cool air sinking.
How does radiation differ from conduction and convection?
Radiation does not require matter to transfer heat, while conduction and convection do.
How does conduction occur in solids?
Molecules vibrate and transfer energy to neighboring molecules.
How does convection contribute to weather patterns?
it helps distribute heat in the atmosphere, affecting temperature and precipitation.
What type of radiation is primarily emitted by the sun?
Infrared radiation, along with visible light and ultraviolet radiation.
What is the relationship between temperature and conduction?
Heat flows from areas of higher temperature to areas of lower temperature through conduction.
What factors can affect the speed of convection?
Temperature differences, fluid properties, and the presence of barriers.
How can radiation be both beneficial and harmful?
: It provides warmth and energy from the sun but can also cause sunburn and increase the risk of skin cancer.