Saturday, 8 December 2012

Uses of absorbent materials .


Uses of absorbent  materials .

·         We use a mop to dry the wet floor.
·         I use a sponge when I help my mother wash dishes.
·         Tissue paper is useful when I have a cold and need to blow my nose.
·         We can use cotton buds to clean our ears.
·         After bathing , I use a towel to wipe myself dry.
·         My father uses a piece of soft cloth to clean his spectacles.
·         I can use a handkerchief to wipe off my tears.

Wednesday, 5 December 2012

Springs


All about springs
·         A spring is made of steel.
·         A spring will return to its original size after we stretch it.
·         Some springs are easier to bend than others .
What can we do to a spring?
·         Squeezing
·         Bending
·         Twisting
·         stretching

Tuesday, 4 December 2012

Switch

What is the function of the switch in the circuit   ?


A switch simply opens a circuit, stopping the flow of electricity. For example: a simple circuit would be two wires from a battery, one of which goes to a switch, and the other goes to a light bulb. A third wire goes from the other side of the switch to the other conductor of the light bulb. With the switch closed the circuit is complete and the light goes on. Open the switch and the circuit is broken and the light goes off.