What is the transfer of energy by motion heated gas or liquid?
Δείτε πώς λειτουργεί:
* Θέρμανση: When a gas or liquid is heated, the molecules move faster and spread out, becoming less dense.
* Rising: The less dense, warmer fluid rises because it's less dense than the cooler fluid around it.
* Ψύξη: Καθώς το ζεστό υγρό αυξάνεται, δροσίζεται και γίνεται πιο πυκνό.
* βύθιση: The cooler, denser fluid then sinks, creating a circular motion.
This continuous cycle of rising and sinking fluid transfers heat energy from the source to the surrounding area.
Παραδείγματα μεταφοράς:
* Νερό βρασμού: The heat from the stove heats the water at the bottom of the pot, causing it to rise, while cooler water sinks to take its place.
* κυκλοφορία αέρα σε ένα δωμάτιο: Warm air from a heater rises to the ceiling, while cooler air near the floor sinks.
* ρεύματα ωκεανών: The sun's heat warms the surface of the ocean, causing water to rise and circulate.
Convection is an important process for transferring heat in many natural and engineered systems.
