heat transfer and water cycle

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another, occurring through conduction, convection, or radiation.

Front

What is conduction?

Back

Conduction is the process of heat transfer through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases), where warmer, less dense areas rise and cooler, denser areas sink.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight warming the Earth.

Front

What happens to cold air?

Back

Cold air sinks because it is denser than warm air.

Front

Why do metals conduct electricity?

Back

Metals conduct electricity because they have free-moving electrons that allow electric current to flow easily.

Front

What is the water cycle?

Back

The water cycle is the continuous process by which water evaporates from the Earth's surface, condenses in the atmosphere, and precipitates back to the surface.

Front

What is evaporation?

Back

Evaporation is the process where liquid water turns into water vapor, usually due to heat from the sun.

Front

What is condensation?

Back

Condensation is the process where water vapor cools and changes back into liquid water, forming clouds.

Front

What is precipitation?

Back

Precipitation is any form of water, such as rain, snow, sleet, or hail, that falls from the atmosphere to the Earth's surface.