Levers are classified in to:
Four
Five
Two
Three
What is solar energy?
Energy we get from earth
Energy we get from water
Energy we get from wind
Energy we get from sun
The source of energy stored inside the earth is called:
Geothermal energy
Solar energy
Wind energy
Water energy
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.
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
The force which pulls all the things towards the centre of the earth is called:
Mechanical force
Muscular force
Gravitational force
Frictional force
Which force tries to pull two objects towards each other?
Which make our work easier and faster?
Simple machines
Generators
Cars
Inverter
Which is the natural force that move objects?
Light
Heat
Wind
Sound
Which energy converts kinetic energy from falling water into electricity ?
Hydropower
