In all circumstances where a material is hotter than its surroundings, heat transfer takes place.
Wrong, transfer of heat by conduction does take place in fluids.
Conduction, which is the transfer of heat through direct contact between particles, cannot take place in a vacuum because there are no particles present to transfer the heat.
Wrong, transfer of heat does take place in fluids. In fact it can take place more efficiently in fluids than in solids because convection is possible in fluids.
The heat from the sun reaches the Earth at the speed of light, which is around 186,282 miles per second. The transfer of heat from the sun to the Earth occurs through a process called radiation, where electromagnetic waves carry heat energy through space.
Conduction takes place in the process of heat transfer through direct contact between objects or substances.
convection
Convection is the transfer of heat through the movement of a fluid (such as air or water). As the Sun heats the Earth's surface, the air close to the surface absorbs that heat and becomes less dense, causing it to rise. As the warm air rises, cooler air moves in to take its place, creating a cycle of heat transfer that helps warm the Earth's surface.
convection
It is the process of transfer of heat from one place to other with actual movement of heated particles. Convention of heat take place in fluids and gases .
Heat transfer can take place in any container that can conduct heat, such as metal pots and pans, glass containers, and ceramic dishes. The material of the container will influence how quickly heat is transferred to or from the contents inside.
Convection
Conduction cannot take place in liquids because the particles are free to move around, disrupting the transfer of heat. In solids, particles are closely packed and transfer heat through vibrating in place, allowing conduction to occur easily.