Thermosphere
Stratosphere
Mesosphere
Troposphere
Momentum
Acceleration
Speed
Velocity
Chlorine
Sulphur
Phosphorus
Carbon
Oxygen
Nitrogen
Sulphur dioxide
Carbon dioxide
1
2
3
4
Sodium
Aluminium
Copper
Gold
Forceps
See saw
Wheel barrow
A pair of scissors
Chemical energy into electric energy
Sound energy into electric energy
Solar energy into electrical energy
Solar energy into sound energy
Paper
Plastic
Mica
Geographical south
Geographical north
Equatorial region
Centre of the earth