Cell and Cell Organelles Class 8 Science Notes Maharashtra State Board Structure of the Cell According to the functions, cells of different sizes and structures are found in different organs. Components of a Cell 1. Cell Wall: It is found around the cells of algae, fungi, and plants. Animal cells lack cell walls. The cell … Read more
Disaster Management Class 8 Science Notes Maharashtra State Board Earthquake Sudden vibrations on the earth and shaking of the earth’s surface /ground is called an earthquake. These cause seismic waves leading to movements of the earth’s surface like tremors, shaking, or going down. The shocks and waves formed in the interior of the earth spread … Read more
Pollution Class 8 Science Notes Maharashtra State Board Many problems have arisen on the earth due to human interference in nature. Industrialization, increasing population, mining, transportation, and indiscriminate use of pesticides and fertilizers are causing pollution on the earth. It is affecting human beings. Pollution: Contamination of the natural environment that will be harmful to … Read more
Metals and Nonmetals Class 8 Science Notes Maharashtra State Board All the objects or materials in the world are made from elements, compounds, or their mixtures. Scientists classified all the elements into three general types which are metals, nonmetals, and metalloids. Metals Gold, silver, iron, copper, aluminium, magnesium, calcium, sodium, and platinum are a few … Read more
Composition of Matter Class 8 Science Notes Maharashtra State Board We saw in the previous standards that all the objects that we see around us and also those that cannot be seen are made of the same or other matter. Take some mustard seeds in a transparent plastic jar. Thread a long thread at the … Read more
Inside the Atom Class 8 Science Notes Maharashtra State Board We have seen that matter is made of molecules. Molecules are formed from atoms. Effectively an atom is the smallest unit of matter. An atom is the smallest particle of an element which retains its chemical identity in all physical and chemical changes. We have … Read more
Current Electricity and Magnetism Class 8 Science Notes Maharashtra State Board An atom has the same number of positively charged protons and negatively charged electrons. So an object doesn’t show any charge though its atoms contain charged particles. Therefore, we can say that plenty of electrical charge is filled in the objects around us. What … Read more
Force and Pressure Class 8 Science Notes Maharashtra State Board A stationary object on which no force is acting remains stationary. An object in motion continues to move with the same speed and direction when no force is acting on the object. This is Newton’s first law of motion. Contact and Non-Contact Forces: In the … Read more
Health and Diseases Class 8 Science Notes Maharashtra State Board Health Health is a state of complete physical, mental, and social well-being and not merely the absence of any disease. What is Disease? The condition of disturbances in the physiological or psychological processes of the body is called a disease. Each disease has its specific … Read more
Living World and Classification of Microbes Class 8 Science Notes Maharashtra State Board Biodiversity and Need for Classification Last year we learned that all the living organisms on Earth have adapted according to geographic regions, food ingestion, defense, etc. While adapting, many differences are observed in the organisms of the same species too. According to … Read more