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Motion and time
Motion and time
Slow or fast
Measurement of time
Measuring speed
Distance –time graph
winds, storms and cyclones
winds, storms and cyclones
Air exerts pressure
Air expands on heating
Thunderstorms and cyclones
Destruction caused by cyclones
Advanced technology has helped
electric currents and its effects
electric currents and its effects
Symbols of electric components
Heating effect of electric current
Magnetic effect of electric current
Electro magnet
Waste water story
Waste water story
Water, our life line
What is sewage?
Water freshens up-an eventful journey
Wastewater treatment plant (WWTP)
Better house keeping practices
Sanitation and diseases
Sanitation at public places
water a precious resource
water a precious resource
How much water is available
Forms of water
Groundwater as an important source of water
Depletion of water table
Distribution of water
What role you can play
light
light
Light travels along a straight line
Reflection of light
Right or left
Playing with spherical mirrors
Sunlight –white or colored?
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