Revise GCSE Physics


Question:Describe how the Sunís energy can be harnessed in different ways.

Photocells can be used to produce electricity directly from the Sunís light.

The heat of the Sun can also be used directly to heat water and cook food, this is called passive solar heating.

Describe how the Sunís energy can be harnessed:

Radiation from the Sun can be absorbed by a surface and transferred into heat energy

Produces convection currents (wind) to drive turbines

How glass can be used to provide passive solar heating for

buildings

Light can be reflected to a focus by a curved mirror.