'First wheel' diaporamas de présentation

of Light

Refraction. Reflection. of Light. Light bends only at the boundary of two mediums. It continues to travel in a straight line when there is no change in medium. What is Refraction?. Refraction is the change in direction , or bending , of light when it passes from one medium to another.

393 views • 21 slides

Electrical Safety

Electrical Safety. Closed circuit. Open circuit. Electrical Safety. Fuse : a short piece of metal that melts if current exceeds a set value (to protect device) Circuit breaker : an automatic switch that opens the circuit when current exceeds a set value. (uses a bimetallic strip).

271 views • 16 slides

Scientific method of my invention

214 views • 9 slides

Public transport

Public transport. Private transport. Disadvantages of private transport. Air pollution Noise pollution Gives out carbon di oxide gas which is harmful to the environment. Advantages of private transport. Sometimes it helps to save time. Comfortable to travel.

715 views • 9 slides