The latest revision set of questions , aimed primarily at IGCSE Physics, can be found at
X-Rays in Medicine : http://e-physics.org.uk/quizzes/xraymed/
Light and Sound : http://www.e-physics.org.uk/quizzes/lightandsound/
Circuits 1 : http://www.e-physics.org.uk/quizzes/circuits1
Circuits 2 : http://www.e-physics.org.uk/quizzes/circuits2
Dr.Overy’s Science Knowledgebase is now open at …..
Here is a useful resource, developed by Anup Shah. The website looks into global issues that affect everyone and it aims to show how most issues are inter-related…….
How do we define alternative energy ?
It is usually associated with a source of energy which is renewable. We can regard a renewable energy source as having an unlimited supply of energy , since it is constantly being replenished as we convert the energy into other forms .