CBSE Syllabus for Class 8 Science for Academic Year 2020-2021
Students must refer to the syllabus every time whenever they study. It will help them in knowing the topics that they have to study.
Chapter 1: Crop Production and Management
Chapter 2: Microorganisms : Friend and Foe
Chapter 3: Synthetic Fibres and Plastics
Chapter 4: Materials – Metals and Non-Metals
Chapter 5: Coal and Petroleum
Chapter 6: Combustion and Flame
Chapter 7: Conservation of Plants and Animals
Chapter 8: Cell – Structure and Functions
Chapter 9: Reproduction in Animals
Chapter 10: Reaching the Age of Adolescence
Chapter 11: Force and Pressure
Chapter 12: Friction
Chapter 13: Sound
Chapter 14: Chemical Effects of Electric Current
Chapter 15: Some Natural Phenomena
Chapter 16: Light
Chapter 17: Stars and The Solar System
Chapter 18: Pollution of Air and Water
Chapter 1: Crop Production and Management – Class 8 – Notes
Crops are plants grown by the farmers. Agriculture plays a very important role in the Indian economy. It is the backbone of our country. 70% of the Indian population depends on agriculture for food and money. It is the major occupation in the rural areas. The cultivation of crops depends primarily on the weather and soil conditions.
Chapter 2: Microorganisms : Friend and Foe – Class 8 – Notes
If you observe a drop of water in a pond through a microscope, you will see a lot of tiny rounded structures. These tiny creatures are known as microbes or microorganisms. They are all around us and are so small in size that they cannot be seen with bare human eyes. Microbes are classified into four groups as:
Chapter 3: Synthetic Fibres and Plastics – Class 8 – Notes
We all wear and enjoy different types of clothes. There are some special types of clothes which are worn during certain occasions and some are season based clothes like cotton clothes during the summer to keep us cool, woollen clothes like sweaters, overcoats, shawls to keep our body warm during the winter season and raincoats during the rainy season. These different types of clothes are all prepared from the Fibres.
Chapter 4: Materials – Metals and Non-Metals – Class 8 – Notes
Everything around us is categorized into either metals or non-metals. Hence, it is important to know what nonmetals and metals are and how to distinguish them. Class 8 Science Chapter 4 discusses the various physical and chemical properties of metals and non-metals.
Chapter 5: Coal and Petroleum – Class 8 – Notes
Energy can be extracted from natural resources in many forms, and it can be transferred from one body to another in the form of heat or work.
Energy is essential to life and all living organisms. The sun, directly or indirectly, is the source of all the energy available on Earth. In Physics, energy is a quantitative property that must be transferred to an object in order for it to perform work. Hence, we can define energy as the strength to do any kind of physical activity. Energy is a conserved quantity and the law of conservation of energy states that energy can neither be created nor destroyed but can only be converted from one form to another. The SI unit of energy is Joule.
Chapter 6: Combustion and Flame – Class 8 – Notes
- A chemical process in which a substance reacts with oxygen to give off heat and light is called combustion.
- The burning of wood is an example of combustion.
You might have heard that certain substances are combustible whereas some are non-combustible. Combustible substances are simply those that undergo this process.
But isn’t Oxygen the most abundant substance on Earth? Doesn’t it combine with most of the elements? But surely, not all reactions can be said to be similar to this process. Even many people believe rusting of Iron is a similar process as rusting involves iron combining with oxygen giving off heat.
Chapter 7: Conservation of Plants and Animals – Class – 8 – Notes
- Extinction is when a species is completely wiped out from Earth.
- Once the last living individual of a species dies, the species is said to be extinct.
Chapter 8: Cell – Structure and Functions – Class – 8 – Notes
Cells are the fundamental structural units of living organisms and the basic units of life.
Robert Hooke discovered the cell in the year 1665 from a thin section of cork under a self-made microscope.
Chapter 9: Reproduction in Animals – Class – 8 – Notes
Reproduction is a process by which one organism produces offspring. It is one of the basic processes in all known life forms. Every organism we see around us is a direct result of reproduction.
Reproduction in animals and plants takes place in two ways:
Chapter 10: Reaching the Age of Adolescence – Class – 8 – Notes
The period of life, when the body undergoes changes, leading to reproductive maturity, is called adolescence. This is the time span in which the child develops into an adult.
- Adolescence begins around the age of 11 and goes on until 18 or 19 years of age.
- Adolescents are also called ‘teenagers’.
- The body at this stage undergoes important changes and these mark the period of puberty.
Chapter 11: Force and Pressure – Class – 8 – Notes
In science, a push or pull of an object is known as force. The interaction between two objects arises force. Force has both magnitude and direction. The strength of a force is expressed in magnitude. Force brings about a change in the direction or state of motion of a body. In class 8 Science chapter 11, various characteristics of force along with the types of force are discussed.
Chapter 12: Friction – Class – 8 – Notes
When we throw a ball on the floor it starts moving with some velocity. But once it is rolled ideally no force is acting in the direction of motion and according to Newton’s first law the ball should keep on rolling but this does not happen. The ball stops after moving a certain distance so a force must be acting on it. That force is known as friction.
Chapter 13: Sound – Class – 8 – Notes
Sound plays an important role in our life. It is through sound we know that a period in school is over or if someone is approaching you by just listening to the footsteps. Vibrating objects produce sound. Vibration is the to and fro or back and forth movement of an object. Sound needs a medium to travel. Hence, it cannot travel in a vacuum.
Chapter 14: Chemical Effects of Electric Current – Class – 8 – Notes
Metals such as copper, aluminium are good conductors of electricity while materials like rubber plastics are bad conductors of electricity. In the case of liquids, some liquids are good conductors of electricity while a few are bad conductors of electricity. The water obtained from sources such as pumps, wells, ponds and tap are not pure and contain several dissolved salts. Such water is a good conductor of electricity. While distilled water is free of salt and is a bad conductor of electricity.
Chapter 15: Some Natural Phenomena – Class – 8 – Notes
The class 8 Science chapter 15 discusses natural phenomena: lightning and earthquakes, and the measures to be taken to minimize the destruction caused by these phenomena.
Chapter 16: Light – Class – 8 – Notes
The world as we know is largely known through senses and the sense of sight is one of the most important senses. It is only when the light from an object enters our eyes that we see it. The light might have been either emitted by the object or reflected by it. Some of the important terminologies related to light are:
Light is the energy that enables us to see. Light is emitted from a source such as the Sun. The word usually refers to visible light, which is visible to the human eye and is responsible for the sense of sight.
Chapter 17: Stars and The Solar System – Class – 8 – Notes
The planets, the stars, the moon and other bodies in the sky are known as celestial bodies. Astronomy is a branch of science that studies celestial bodies and the associated phenomena. The change in the shape of the moon every day is one of the observations of celestial bodies that we can make. The day on which the whole disc of the moon is visible is known as the full moon day, while the day on which only a small portion of the moon is visible is known as the new moon day. Various shapes of the bright part of the moon seen during a month are known as the phases of the moon. The phases of the moon occur as we can only see the part of the moon that reflects the light of the Sun towards us.
Chapter 18: Pollution of Air and Water – Class – 8 – Notes
In chapter 18 of class 8 Science, we study the harmful changes taking place in our surroundings and their effects on our lives. The substance that contaminates air and water are known as pollutants. Air gets polluted from natural sources, smoke and dust arising from forest fires or volcanic eruptions. Pollutants such as power plants and automobile exhaust and burning of firewood are man-made pollutants. Carbon dioxide, nitrogen oxides, carbon monoxide, methane and sulphur dioxide are the major pollutants of air. Increasing levels of carbon dioxide lead to global warming.CBSE Syllabus for Class 8 Science for Academic Year 2020-2021
CBSE Notes for Class 8 Science Free Download for All Chapters
Download PDF of NCERT Solutions for Class 8 Science
|Chapter Name||CBSE Class 8 Science Study Notes||NCERT Solutions Download Class 8|
|Crop Production and Management||Class 8 Chapter 1 Science Crop Production and Management Notes||NCERT Solutions Class 8 Crop Production and Management Chapter 1|
|Micro Organism:Friend and Foe||Class 8 Chapter 2 Science Micro Organism:Friend and Foe Notes||NCERT Solutions Class 8 Micro Organism:Friend and Foe Chapter 2|
|Synthetic Fibres and Plastic||Class 8 Chapter 3 Science Synthetic Fibres and Plastic Notes||NCERT Solutions Class 8 Synthetic Fibres and Plastic Chapter 3|
|Materials:Metal and Non Metal||Class 8 Chapter 4 Science Materials:Metal and Non Metal Notes||NCERT Solutions Class 8 Materials:Metal and Non Metal Chapter 4|
|Coal and Petroleum||Class 8 Chapter 5 Science Notes||NCERT Solutions Class 8 Crop Production and Management Chapter 5|
|Combustion and Flame||Class 8 Chapter 6 Science Coal and Petroleum Notes||NCERT Solutions Class 8 Coal and Petroleum Chapter 6|
|Conservation of Plants and Animals||Class 8 Chapter 7 Science Conservation of Plants and Animals Notes||NCERT Solutions Class 8 Conservation of Plants and Animals Chapter 7|
|Cell Structure and Functions||Class 8 Chapter 8 Science Cell Structure and Functions Notes||NCERT Solutions Class 8 Cell Structure and Functions Chapter 8|
|Reproduction in Animals||Class 8 Chapter 9 Science Reproduction in Animals Notes||NCERT Solutions Class 8 Reproduction in Animals Chapter 9|
|Reaching the age of Adolescence||Class 8 Chapter 10 Science Reaching the age of Adolescence Notes||NCERT Solutions Class 8 Reaching the age of Adolescence Chapter 10|
|Force and Pressure||Class 8 Chapter 11 Science Force and Pressure Notes||NCERT Solutions Class 8 Force and Pressure Chapter 11|
|Friction||Class 8 Chapter 12 Science Friction Notes||NCERT Solutions Class 8 Friction Chapter 12|
|Sound||Class 8 Chapter 13 Science Sound Notes||NCERT Solutions Class 8 Sound Chapter 13|
|Chemical Effects of Electric Current||Class 8 Chapter 14 Science Chemical Effects of Electric Current Notes||NCERT Solutions Class 8 Chemical Effects of Electric Current Chapter 14|
|Some Natural phenomenon||Class 8 Chapter 15 Some Natural phenomenon Notes||NCERT Solutions Class 8 Some Natural phenomenon Chapter 15|
|Light||Class 8 Chapter 16 Light Notes||NCERT Solutions Class 8 Light Chapter 16|
|Stars and the solar system||Class 8 Chapter 17 Science Stars and the solar system Notes||NCERT Solutions Class 8 Stars and the solar system Chapter 17|
|Pollution of Air and Water||Class 8 Chapter 18 Science Pollution of Air and Water Notes||NCERT Solutions Class 8 Pollution of Air and Water Chapter 18|