Thermal Energy transfer and equilibrium

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

Give an example of convection in everyday life.

Back

Movements of water in a pot, molten mantle in the earth's crust, and hot air rising in the atmosphere are examples of convection.

Front

What causes localized winds near coastlines?

Back

Localized winds near coastlines are caused by uneven heating of the Earth's surface by the Sun, leading to convection currents.

Front

What is radiation in the context of heat transfer?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, without the need for a medium.

Front

How does heat transfer when roasting marshmallows over a fire?

Back

Heat is transferred to the marshmallows primarily through radiation from the fire.

Front

What is the direction of heat transfer?

Back

Heat transfers from an area of high temperature to an area of low temperature.

Front

What happens to the temperature of a drink when ice is added?

Back

The heat transfers from the drink (e.g., soda) to the ice, causing the drink to cool down.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature and no heat flows between them.

Front

What is the role of the Sun in Earth's energy system?

Back

The Sun is the primary source of energy for the Earth, providing heat and light that drive weather patterns and climate.

Front

What is the difference between conduction and convection?

Back

Conduction is the transfer of heat through direct contact between materials, while convection involves the movement of fluids.