NCERT Solutions for Class 8 Science: NCERT Solutions aims in helping the student understand all the concepts and attain higher marks on their exams. Class 8 science from NCERT Solution, the student will learn and understand what seems to be hard to grasp. Written answers to questions are highly in-depth and detailed, eliminating concerns about hard scientific problems posed in a textbook.
NCERT Solutions for Class 8 Science Chapter wise
Chapter 1: Crop Production & Management
This chapter helps the students understand the way food is produced via agricultural practices. Moreover, this chapter explains that crops are majorly categorized into 2 kinds based on the season. Basic practices of crop-production consist of points that are explained. They include soil preparation, sowing, adding manure & fertilizers, irrigation, weeds protection, harvesting, and storage.
Chapter 2: Microorganisms: Foe & Friend
This chapter will help the student know about the microorganisms that are useful & that which are harmful. It’s here where the student will study main microorganisms groups including bacteria, fungi, algae, and protozoa. Here, the student will get to understand the kinds of viruses, medicinal & commercial usage of microorganisms. Where Microorganisms Live? Useful and Harmful Microorganisms, Nitrogen Fixation, Food Preservation, soil Fertility & the Nitrogen cycle are other topics covered.
Chapter 3: Synthetic Fibres & Plastics
This chapter explains synthetic fibers & their kinds which include rayon, polyester, acrylic, and nylon. Afterward, this chapter introduces the students to plastics, their effects, and their properties on the environment.
Chapter 4: Materials: Metals & Non-Metals
Here, the student will study non-metals and metals their chemical and physical properties & their reactions with water, oxygen, bases, and acids. Furthermore, the student will study displacement reactions, different uses of non-metals and metals.
Chapter 5: Coal & Petroleum
Chapter 5 talks about natural resources & their classification. This explains that natural gas, petroleum, & coal are fossil fuels that are created from dead remains of living organisms a long time ago. This explains how coke, coal gas, and coal tar are created from coal. Chapter five also explains petroleum refining and natural gas concept.
Chapter 6: Combustion & Flame
It’s here where the students will learn about combustion & its various types. This is well explained with the assistance of activities. Moreover, measures to control fire are explained. The concept of flame & its structure is also explained. Chapter six ends with the topic of fuel efficiency, fuel & harmful effects when burning these fuels.
Chapter 7: Conservation of Animals and Plants
Chapter seven put more emphasis on the cause of deforestation, outcomes of deforestation, ways of conserving forests & wildlife. This chapter also explains flora, fauna, Biosphere reserve, endemic species, national park, wildlife sanctuary, red-data book, paper recycling, migration & reforestation.
Chapter 8: Cell: Structure & Functions
With this chapter, you’ll get to understand the smallest structural unit of organisms. With this chapter, you’ll learn about the cell, the discovery of cells, different sizes and shapes of cells, cell-structure & its functions, plant-cell & animal cell, plant cell & animal cell comparison.
Chapter 9: Reproduction in Animals
This chapter explains the modes & reproduction procedures in creatures. It’s important for species continuation. With this chapter, the student will figure out the way reproduction occurs in animals. Other topics include sex determination, cloning, metamorphosis, budding, etc.
Chapter 10: Reaching Adolescence Age
Chapter 10 will teach the student about adolescence, Adam’s apple, puberty, secondary sexual-characters, functions of hormones at initiating reproductive function, menopause & menarche, and reproductive health.
Chapter 11: Force & Pressure
Chapter eleven is significant to Physics. Here, the students will know how force arises from the interaction of 2 objects. The chapter also explains that a force is a pull or a push. The student will study force, force magnitude & direction, force effects, kinds of forces, pressure, the pressure exerted on liquids & gases & atmospheric pressure.
Chapter 12: Friction
Chapter twelve explains the force of friction, factors that affect friction, the way friction is increased & reduced. Furthermore, fluid friction will also be explained. Numerous diagrams & images are used in this topic to help the student have a better understanding.
Chapter 13: Sound
Here, the students will learn how sound it produces, the way sound travels, how sound is heard, and why other sounds are louder. Other concepts explained here are noise pollution, noise causes, noise impacts & its control measure.
Chapter 14: Chemical Effects of Electric-Current
In chapter 14 you’ll study numerous kinds of solutions/liquids which conduct electricity or not, electroplating, the chemical-effects of electric current, etc.
Chapter 15: Some Natural Phenomena
Chapter 15 will explain the damaging natural phenomena including lighting & earthquakes. Moreover, at the end of this chapter, you will have steps that will help you minimize destruction from these natural phenomena. Also, with this chapter, the students will be aware of natural phenomena & protect themselves from the situations.
Chapter 16: Light
Chapter16 helps the student know that with the help of light we are capable to see things that surround us. Moreover, this chapter describes the law-of-reflection, diffused and regular reflection, & multiple reflections. The chapter also explains that sunlight is understood as white light & it has 7 colors. Splitting light to its constituent hues is understood as dispersion. The human eye will be explained using the diagram in this chapter. The chapter further explains the way we should care for our eyes & the way visually impaired people read & write.
Chapter 17: Stars & The Solar System
This chapter describes celestial objects, the Position of the objects, different stars patterns, and their structure. Moreover, the chapter begins with explaining the Moon, the Period of the moon, its state in the close planetary system, moon surface & general population perception venturing on the moon surface.
Chapter 18: Pollution of Air & Water
Chapter eighteen explains the harmful changes which take place in the surrounding brought by air & water pollution. Its effect on human lives will also be explained. This chapter begins by explaining what air pollution is & how air is polluted. More concept which is explained includes the greenhouse effect and ways of reducing air pollution.