Class VIII Science

Key Learning Points-Deforestation, Drought, Desertification, Protected areas- Biosphere Reserves, National parks, wildlife centuries, Flora, Fauna, Endemic Species, Red Data Book, Migration, recycling of Paper and afforestation. Introduction-Different varieties of plant, animals and microorganisms are found on the earth. They are different from each other in many ways. Their geographical distributions as like in tropical, subtropical,

FRICTION      Class VIII     Chapter 12 INTRODUCTION – When we go somewhere by a bicycle we often apply brakes to slow or stop the bicycle. When we are running or walking and unknowingly under our feet some banana peel comes, we often fall and get injured.  Look at the tyres of bicycle, bus; truck etc. like

 LEARNING OBJECTIVES- DISCOVERY OF CELL AND CELL THE VARIETY OF CELLS THE STRUCTURE OF CELLS THE FUNCTIONS OF CELLS TYPES OF CELLS COMPARISON BETWEEN PLANT AND ANIMAL CELLS DISCOVERY OF CELL- The cell was discovered by Robert Hooke in 1665 in cork cells. He discovered small pit or chamber like structures in cork plug of