Many of the energy exchanges in the natural world are transfers of
Conduction
object, whose atoms are vibrating.
object, causing its atoms to vibrate,
energy, or
touches a
When this occurs, the warmer object loses some energy (cools down), and the
cooler object gains some energy (heats up)
Heat flows from the (Ocolder Ohotter) object
to the (colder
hotter) object.
When two objects are the same
no heat is transferred,
and the objects are said to be in,
(Odoes Odoes not) require direct contact to transfer heat.
Radiation
The Sun emits
excite the
and their energy
they strike to start vibrating, thus transferring heat.
Hotter objects emit a larger amount of (Ohigher Olower) energy radiation than
cooler objects.
Convection
relies on the
⚫convection current
of fluids, such as
and
causing it to have
1. As a fluid near the heat source is heated, it,
a
density than the fluid around it.
2. The hotter fluid (Orises Osinks) to the (Otop Obottom),
where it gets (cooler Ohotter).
3. At the same time, cooler fluid (Orises Osinks) to the (Otop Obottom),
where it gets (cooler hotter).