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 force tries to pull two objects towards each other?
Mechanical force
Muscular force
Gravitational force
Frictional force
Which is the man made thing used to move things?
Water
Air
Crane
Wind
In which of the following is force applied to overcome resistance?
Inclined plane
Lever
Wheel and axle
Pulley
The source of energy stored inside the earth is called:
Geothermal energy
Solar energy
Wind energy
Water energy
Levers are classified in to:
Four
Five
Two
Three
Which is built to trap water?
Dams
Canals
Well
Tank
Which is the natural force that move objects?
Light
Heat
Sound
Which make our work easier and faster?
Simple machines
Generators
Cars
Inverter
Which is done when an object moves?
Work
Force
Vibration
Matter
