Tuesday, November 13, 2012

ENERGY IN ACTION






Energy is found in different forms.
 
The batteries in a toy car produce electrical energy to move it.Object that move have Kinetic energy.
 
 
A burning candle gives off light energy and heat energy.
A stretched rubber band in a catapult has potential energy.

Quiz: Which of the following sources of energy is used by a plant in making its own food?
           A  Fuel
           B  Wind
           C  Air
           D  Sun

Friday, October 19, 2012

Quiz: Which of the following is not a source of energy?
           A.  Food
           B.  Wind
           C.  Fuel
           D.  Air

Wednesday, October 17, 2012

ELECTRICITY





ACCUMULATORS

 
 

Accumulators are used in vehicles, such as motorcycles, cars and lorries.
 
DYNAMOS 




 Dynamos generate electricity.They are used to light up the bulb of a bicycle.

SATELLITES
 
 Satellites get their electricity from solar cells.Solar cells transform light energy into electricity.

HIDROELECTRIC


 We can also get electricity from hydroelectric power station.

For  more information, please visit:http://library.thinkquest.org/6064/cgi-bin/sources.cgi