Question

How does the surface area affect the flow of heat from the foil into the ice?

Answer 1

Answer:

Explanation:

There are three basic ways in which heat is transferred. In fluids, heat is often transferred by convection, in which the motion of the fluid itself carries heat from one place to another. Another way to transfer heat is by conduction, which does not involve any motion of a substance, but rather is a transfer of energy within a substance (or between substances in contact). The third way to transfer energy is by radiation, which involves absorbing or giving off electromagnetic waves.

Convection

Heat transfer in fluids generally takes place via convection. Convection currents are set up in the fluid because the hotter part of the fluid is not as dense as the cooler part, so there is an upward buoyant force on the hotter fluid, making it rise while the cooler, denser, fluid sinks. Birds and gliders make use of upward convection currents to rise, and we also rely on convection to remove ground-level pollution.

Forced convection, where the fluid does not flow of its own accord but is pushed, is often used for heating (e.g., forced-air furnaces) or cooling (e.g., fans, automobile cooling systems).

Conduction

When heat is transferred via conduction, the substance itself does not flow; rather, heat is transferred internally, by vibrations of atoms and molecules. Electrons can also carry heat, which is the reason metals are generally very good conductors of heat. Metals have many free electrons, which move around randomly; these can transfer heat from one part of the metal to another.

The equation governing heat conduction along something of length (or thickness) L and cross-sectional area A, in a time t is:

k is the thermal conductivity, a constant depending only on the material, and having units of J / (s m °C).

Copper, a good thermal conductor, which is why some pots and pans have copper bases, has a thermal conductivity of 390 J / (s m °C). Styrofoam, on the other hand, a good insulator, has a thermal conductivity of 0.01 J / (s m °C).

Answer 2

How does the surface area affect the flow of heat from the foil into the ice?

Explanation:

1. If  gadgets have extraordinary temperature, warmth will waft from the hotter item to the less warm one.
2. There are 3 methods that warmth may be transferred with the aid of using conduction, convection, and radiation.
3. conduction is the switch of warmth via solids. a few substances, which include copper and iron, are higher conductors than others, which include wooden and paper.
4. convection is the switch of warmth with the aid of using the motion of currents inside a fluid.  
5. Radiation is the switch of electricity with the aid of using electromagnetic waves. whilst electromagnetic waves are available touch with an item, they switch warmth to that item.