Introduction to Heat and Its Transfer Mechanisms

False (B)

Conduction, convection, and radiation

<p>0</p> Signup and view all the answers

<p>Celsius = 0°C and 100°C Fahrenheit = 32°F and 212°F Kelvin = 0 K All scales = Freezing point of water</p> Signup and view all the answers

<p>Temperature differences (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Joules or calories</p> Signup and view all the answers

<p>radiation</p> Signup and view all the answers

<p>Copper (D)</p> Signup and view all the answers

<p>Conduction = Heat transfer through direct contact Convection = Heat transfer through movement of fluids Radiation = Heat transfer through electromagnetic waves</p> Signup and view all the answers

<p>heat capacity</p> Signup and view all the answers

<p>Temperature difference</p> Signup and view all the answers

The state where two objects have the same temperature, resulting in no heat transfer between them.

A measure of how well a material conducts heat. Materials with high thermal conductivity transfer heat easily, while those with low conductivity resist heat transfer.

The transfer of heat energy through direct contact between objects of different temperatures. Heat flows from the hotter object to the colder one.

The transfer of heat energy through the movement of fluids (liquids or gases). Warmer fluids rise, and cooler fluids sink, creating a cycle of heat transfer.

The transfer of heat energy through electromagnetic radiation, which can travel through space. The sun's heat reaches Earth through radiation.

Heat is the flow of energy from a hotter object to a colder one. This flow is driven by temperature differences.

Conduction is the transfer of heat through direct contact between objects. Good conductors have free-moving electrons, like metals. Poor conductors, or insulators, have tightly bound electrons, like wood.

Convection is the transfer of heat through the movement of fluids (liquids or gases). Warmer fluids rise, cooler fluids sink, creating a flow that transports heat.

Radiation is the transfer of heat through electromagnetic waves. No medium is required, like how the Sun heats the Earth. All objects above absolute zero emit radiation, and hotter objects radiate more.

The larger the temperature difference between objects, the faster the heat transfer. This is why a hot cup of coffee cools down quickly in a cold room.

Materials have varying thermal conductivities. Good conductors like metals transfer heat easily, while insulators like wood resist heat flow.

The amount of heat energy needed to raise the temperature of an object by one degree Celsius. It depends on the object's mass and composition.

The amount of heat energy needed to raise the temperature of one gram of a substance by one degree Celsius. Water has a high specific heat, meaning it takes a lot of energy to change its temperature.