SCIENCE (CLASS 5)

                                                            

     WORK

A-Work is said to done  only when a force is applied to the body makes it move.

B-Energy is the ability to do  work. Types of energy check your book.

Sources of energy –

RENEWABLE ENERGY – is a source of energy that can be reused again.

NON RENEWABLE ENERGY- is a source of energy that cannot be reused again.

MACHINE- IS A DEVICE THAT MAKES OUR WORK EASIER, SAVES TIMES,

AND  USES  LESS EFFORT .

TYPES OF MACHINES-.LEVERS , PULLEY, INCLINED PLANE, WHEEL AND AXLE

 SCREW , WEDGE.

OUT OF THIS LEVERS  ARE IMPORTANT WHICH WE USE  

IN DAY TO DAY  OF OUR LIFE.

You need to know F,L , E- FROG LAYS EGGS

1^st  class lever- when the fulcrum is in the middle.

2^nd class lever- when the lever is in the middle.

3 rd class lever- when the effort is in the middle.

GO THROUGH YOUR BOOK YOU WILL UNDERSTAND BETTER.

DO THE EXERCISE NO 1 ,2,3 ,4,5 IN YOUR SCIENCE EX-BOOK

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