Energy

Heat Transfer Types

100

• This type of heat transfer happens when warm air rises and cooler air moves in to take its place, creating currents. Name it.

Convection

200

• This type of heat transfer moves energy by direct contact between particles (like touching a hot pan). Name it.

• Conduction

300

• This type of heat transfer can travel through empty space (a vacuum) and does not need particles. Name it.

Radiation

400

Which type of heat transfer best explains how the Sun warms your face?

radiation

500

• Describe in one sentence how conduction, convection, and radiation are different from each other.

• Conduction: direct contact; Convection: movement of fluids (liquids/gases); Radiation: electromagnetic waves (can travel through vacuum)

Conductors and Insulators

100

• Materials where particles are close together and easily pass vibrations and thermal energy are called this.

• Conductor

200

• Materials with particles far apart that prevent vibrations from passing easily are called this.

Insulator

300

Is metal usually a conductor or an insulator? Explain

• Conductor — metals have closely packed particles and free electrons that transfer energy easily

400

Which is the best insulator listed in the slides: air, water, or vacuum

• Vacuum — it is the best insulator because there are no particles to transfer energy by conduction or convection

500

• Give two real-world examples (one conductor, one insulator) and explain how each either helps transfer or stop thermal energy.

• Example conductor: metal spoon (transfers heat quickly). Example insulator: foam or air (slows heat transfer because particles are spread out).

Examples in Everyday life

100

• Give one example of conduction.Name one.

• Touching a hot pan / picking up snow / touching a stove (any one)

200

Define "vacuum"

completely empty space that has no air in it.

300

Convection

• transfer of thermal energy through movement of gas or liquid particles.

400

 define Conduction

• transfer of thermal energy through direct contact of particles.

500

Give an example of a conductor.

metal spoon,