SCIENCE: CLASS VIII CBSE (CLASS NOTES)

CHAPTER ONE: 

CROPS AND ITS MANAGEMENT

LECTURE-1: CROPS AND TYPES OF CROPS

LECTURE-2: IRRIGATION

LECTURE-3: MANURE AND FERTILISERS

LECTURE-4: WEED

LECTURE-5: HARVESTING

LECTURE-6: STORAGE OF CROPS

CHAPTER TWO:

MICRO-ORGANISMS

LECTURE 1: CLASSIFICATION OF MICRO-ORGANISMS

LECTURE 2: GOOD MICRO-ORGANISMS

LECTURE 3: BAD MICR-ORGANISMS

LECTURE 4: PRESRVATION OF FOOD AND NITROGEN FIXATION

LECTURE 5: QUESTIONS AND ANSWERS

CHAPTER THREE: 

SYNTHETIC FIBRES AND PLASTICS (dropped after rationalisation)

LECTURE 1: FIBRES CLASSICATION

LECTURE 2: POLYESTER AND PET

LECTURE 3: ADVANTAGES AND DISADVANTAGES OF SYNTHETIC FIBRES

LECTURE 4: PLASTICS

CHAPTER FOUR:

METALS AND NON METALS (dropped after rationalisation)

LECTURE 1: PHYSICAL PROPERTIES OF METALS AND NON-METALS

LECTURE 2: CHEMICAL PROPERTIES OF METALS AND NON-METALS

LECTURE 3: DISPLACEMENT REACTIONS AND USES OF METALS AND NON-METALS

CHAPTER FIVE: 

COAL AND PETROLEUM

LECTURE 1:

LECTURE 2:

LECTURE 3:

LECTURE 4:

CHAPTER SIX:

COMBUSTION AND FLAME:

LECTURE 1:

LECTURE 2:

LECTURE 3:

LECTURE 4:

CHAPTER SEVEN:

CONSERVATION OF PLANTS AND ANIMALS:

LECTURE 1:

LECTURE 2:

LECTURE 3:

LECTURE 4:  Q&A: CONSERVATION OF PLANTS AND ANIMALS

CHAPTER EIGHT:

CELL STRUCTURE AND FUNCTIONS: (dropped after rationalisation)

LECTURE 1: CELL AND PARTS OF A CELL

LECTURE 2: PLANT CELL, ANIMAL CELL

LECTURE 3: CELL, TISSUES, ORGAN AND ORGAN SYSTEMS

LECTURE 4: 

CHAPTER NINE:

REPRODUCTION IN ANIMALS:

LECTURE 1: REPRODUCTION IN ANIMALS-I

LECTURE 2:

LECTURE 3:

LECTURE 4:

CHAPTER TEN:

REACHING THE AGE OF ADOLESCENCE:

LECTURE 1: REACHING THE AGE OF ADOLESCENCE-I

LECTURE 2: REACHING THE AGE OF ADOLESCENCE-II

LECTURE 3:

LECTURE 4:

CHAPTER ELEVEN:

FORCE AND PRESSURE:

LECTURE 1: FORCE AND PRESSURE

LECTURE 2:

LECTURE 3:

LECTURE 4:

CHAPTER TWELVE:

FRICTION:

LECTURE 1: FRICTION-I

LECTURE 2: FRICTION, TYPES OF FRICTION

LECTURE 3: ADVANTAGES AND DISADVANTAGES OF FRICTION

LECTURE 4:

CHAPTER THIRTEEN:

SOUND:

LECTURE 1: SOUND AND SOUND PRODUCED BY HUMAN, HUMAN EAR

LECTURE 2:

LECTURE 3: PROPERTIES OF SOUND, ULTRASOUND

LECTURE 4:

CHAPTER FOURTEEN:

CHEMICAL EFFECTS OF ELECTRIC CURRENT:

LECTURE 1: ELECTROLYTES, ELECTRODES, ELECTROLYTIC CELLS

LECTURE 2: CHEMICAL EFFECTS OF ELECTRIC CURRENT

LECTURE 3:

LECTURE 4:

CHAPTER FIFTEEN:

SOME NATURAL PHENOMENA:

LECTURE 1: LIGHTNING

LECTURE 2: EATHQUAKE-I

LECTURE 3: EARTH QUAKE-II

LECTURE 4:

CHAPTER SIXTEEN:

LIGHT:

LECTURE 1: LIGHT AND ITS PROPERTIES

LECTURE 2:

LECTURE 3:

LECTURE 4: HUMAN EYE

CHAPTER SEVENTEEN:

STARS AND THE SOLAR SYSTEM: (dropped after rationalisation)

LECTURE 1:

LECTURE 2:

LECTURE 3:

LECTURE 4:

CHAPTER EIGHTEEN:

POLUTION OF AIR AND WATER: (dropped after rationalisation)

LECTURE 1: AIR POLLUTION

LECTURE 2: WATER POLLUTION

LECTURE 3:

LECTURE 4: