Complete Explanation of CBSE Notes
CBSE Respiration in Organisms Class 7 Extra Questions Respiration releases energy from food The oxygen that we inhale breaks down glucose into carbon dioxide and water. This releases the energy Aerobic respiration uses oxygen to breakdown the food. Anaerobic respiration does not use oxygen Breathing is a process of respiration during which oxygen is inhaled …
Continue reading “Respiration in Organisms Class 7 Extra Questions”
CBSE Soil Class 7 Extra Questions Soil is one of the most important natural resources Soil is the home for many organisms and it is essential for agriculture The rotting dead matter in soil is called humus Soil is formed by the process of weathering The mixture of rock particles and humus is called the …
CBSE Winds, Storms and Cyclones Class 7 Extra Questions Air exerts pressure and expands on heating and contracts on cooling Warm air rises up, and the comparatively cool air tends to sink towards the earth’s surface When warm air rises up, the air pressure at that place becomes less and cooler air moves toward that …
Continue reading “Winds, Storms and Cyclones Class 7 Extra Questions”
CBSE Weather, Climate and Adaptations of Animals to Climate Class 7 Extra Questions Weather describes the condition of the atmosphere. it might be sunny, hot, windy or cloudy, raining or snowing The temperature, humidity and other factors are called the elements of weather Climate is the average weather conditions temperature, pressure, precipitation and humidity – …
Continue reading “Weather, Climate and Adaptations of Animals to Climate Class 7 Extra Questions”
CBSE Physical and Chemical Changes Class 7 Extra Questions There are two types of changes namely physical and chemical changes Physical changes refers to the changes in the physical properties of substances Chemical changes refers to the changes in the chemical properties of substances No new substances are formed in physical changes A new substance …
Continue reading “Physical and Chemical Changes Class 7 Extra Questions”
CBSE Acids, Bases and Salts Class 7 Extra Questions Substances that tastes sour contains acids and chemical nature of such substances is acidic Substances which are bitter in taste and feel soapy on touching are bases and chemical nature of such substances is basic Indicators are used to taste whether a substance is acidic or …
Continue reading “Acids, Bases and Salts Class 7 Extra Questions”
CBSE Heat Class 7 Extra Questions A reliable measure of an object is its temperature Thermometer is used to measure the temperature of an object, the temperature that measures our body temperature is called a clinical thermometer The normal temperature of human body is 37 °C, although the temperature of every person is not 37 …
CBSE Fibre to Fabric Class 7 Extra Questions Some fibres are obtained from plants while some other fibres like wool and silk are obtained from animals Wool comes from yak, sheep, goat and some other animals In India, mostly sheep are reared for getting wool Sheep hair is sheared off from its body, scoured, sorted, …
CBSE Nutrition in Animals Class 7 Extra Questions Carbohydrates, proteins, fats, vitamins and minerals are essential components of food, these components are called nutrients Humans and animals are dependent directly or indirectly on plants for food Nutrition is the mode of taking food by an organism and its utilisation by the body Animals and most …
Continue reading “Nutrition in Animals Class 7 Extra Questions”
CBSE Nutrition in Plants Class 7 Extra Questions Carbohydrates, proteins, fats, vitamins, and minerals are essential components of food, these components are called nutrients Humans and animals are dependent directly or indirectly on plants for food Nutrition is the mode of taking food by an organism and its utilization by the body Green plants are …
Continue reading “Nutrition in Plants Class 7 Extra Questions”
CBSE Revision Notes