Question

Convection is the rising of

_air/liquid and the __ of
cold air/liquid is called a
- How does a penguin use
this to keep warm?
-

Answer 1

Convection is a heat transfer process involving the movement of warmer material rising and cooler material sinking. Penguins use this principle by trapping warm air with their feathers and creating a warm water layer around them when swimming.

Step-by-step explanation:

Convection is a process of heat transfer where warmer, less dense material rises and cooler, denser material sinks under the influence of gravity. This transfer of heat occurs in both gases and liquids, and one can observe this phenomenon when heating soup on a stove or watching weather patterns, such as thunderstorms. The warmer material expands and becomes less dense, which makes it rise, while the cooler material does the opposite.

Penguins utilize this principle of convection to keep warm. Their feathers trap a layer of warm air close to their bodies while they are on land. Additionally, when swimming, the penguin's body heat warms the water immediately around their skin, which then rises due to convection, continually being replaced by cooler water that gets warmed in turn, creating an insulating effect.

Answer 2

Since the outer plumage of the penguin can resist the flow of heat in the cold antarctic air they might gain a little of this heat to keep them warm by thermal convection.

Step-by-step explanation:

• Convection is the circular movement that happens when hot air/liquid moves with molecules that were fast, making it less dense rises while the cold air/liquid drops down.

• Also, they follow the technique of standing together always in a group which further helps them to decrease the loss of heat between them.

• The plumage of penguin provides 80 percent of total insulation and is highly resistant to wind penetration.