Conduction is the way in which energy is transferred (through heating by contact) from a hot body to a cooler one (or from the...

Teaching Guidance 11-14 14-16

Let's think about conduction in solids first. Here each particle vibrates but ends up going nowhere over the longer term. This...

Physics Narrative 11-14

The paper starts to spin because the heat of your hand heats up the air. This sets up a convection current in the air which...

Enrichment Activity 5-11 11-14

Hot water is less dense than cold water so it rises into the top bottle while the cold water sinks into the bottom bottle...

Enrichment Activity 5-11 11-14

In this demonstration students see that if hot water is below cold water, they mix, but if the situation is reversed they do...

Classroom Activity 11-14