3/18 Heat Transfer

3/18 Heat Transfer

Conductors and Insulators

Let's Review!

• Transfer: Movement of something from one place to another

• Heat always move from hot to cold! High to low!

  1. Conduction: Heat is transferred through direct contact

• 2. Convection: Flow of through liquid or gas, hot parts rise ---> cooler parts sink

• 3. Radiation: Transfer of heat through electromagnetic waves

Multiple Choice

How many kinds of heat transfer are there?

• 1
• 2
• 3
• 4 or more

Multiple Choice

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

• Hotter to colder
• Colder to hotter
• Hotter to hotter
• Colder to colder

Multiple Choice

___________________ is the type of heat transfer that occurs in liquids and gas, such as warm air rising and cold air sinking.

• Convection

• Conduction

• Radiation

• insulation.

Multiple Choice

The type of heat transfer that happens through direct is ___________________.

• Convection

• Conduction

• Radiation

• insulation.

Multiple Choice

The kind of heat transfer that travels through electromagnetic waves is ______________________.

• insulation.

• Radiation

• Conduction

• Convection

Multiple Choice

In a swimming pool, water near the surface is slightly warmer. The warm water rises because of

• conduction
• convection
• radiation

Multiple Choice

A chair is several feet from a fireplace. The side of the chair facing the fireplace gets warm due to

• conduction
• convection
• radiation

Multiple Choice

Hot coffee is stirred with a spoon; the spoon gets hot due to

• conduction
• convection
• radiation

Multiple Choice

___________________ are materials that ALLOW heat To move EASILY through them.

• Conductors

• Insulators

Multiple Choice

These are examples of

• Insulators

• Conductors

Multiple Choice

______________ are materials that SLOW DOWN the transfer of heat.

• Conductors

• Insulators

Multiple Choice

These are examples of

• Conductors

• Insulators

Review!

• Conductors=Materials that allow heat to transfer EASILY

• Insulators=Materials that SLOW DOWN the transfer of heat