Which force tries to pull two objects towards each other?
Mechanical force
Muscular force
Gravitational force
Frictional force
Which is the natural force that move objects?
Light
Heat
Wind
Sound
Which make our work easier and faster?
Simple machines
Generators
Cars
Inverter
Any influence that causes an object to undergo a certain change, either concerning its movement or direction is called:
Force
Matter
Change
Vibration
Which is built to trap water?
Dams
Canals
Well
Tank
The force which pulls all the things towards the centre of the earth is called:
When we burn lights in our house:
Electrical energy is converted into light energy
Electrical energy is converted into sound energy
Electrical energy is converted into heat energy
Electrical energy is converted into mechanical energy
Which is done when an object moves?
Work
Levers are classified in to:
Four
Five
Two
Three
Why should energy sources be used carefully?
Because energy sources are in limited supply.
Because energy sources are present in abundance.
Because energy sources are renewable.
Because energy sources are present in unlimited supply.
