NCERT SCIENCE NOTES CLASS 7 CHAPTER 8
Winds, Storms and Cyclones Air Exerts Pressure Relation between Wind (Air) and Air Pressure Air Expands on Heating Wind Currents Uneven heating of the equator and the poles Uneven heating of land and water The word monsoon is derived from…
NCERT SCIENCE NOTES CLASS 7 CHAPTER 7
Weather, Climate and Adaptations of Animals to Climate Weather Climate CLIMATE AND ADAPTATION: • Change in climate lead to adaption in animal and results in evolution. • Climate also has an effect on the soil. • The polar region has…
NCERT SCIENCE NOTES CLASS 7 CHAPTER 6
Physical and Chemical Changes There are two types of changes, physical and chemical changes. Physical Changes Example: Melting of ice and freezing of water. Examples of physical change: Definition of Chemical Change Chemical change is a permanent change which cannot…
NCERT SCIENCE NOTES CLASS 7 CHAPTER 5
Acids, Bases and Salts Chemicals can be broadly classified into three categories, acids, bases and salts. Acids Examples: Hydrochloric acid and sulphuric acid are corrosive acids. Carbonic acid is a non-corrosive acid. Organic acids: Naturally occurring acids obtained from plants…
NCERT SCIENCE NOTES CLASS 7 CHAPTER 4
Heat Concept of Heat Temperature Thermometer Clinical Thermometer Laboratory Thermometer Maximum-Minimum Thermometer Scales of Temperature Transfer of Heat Conduction Convection Radiation Examples: SUMMER AND WINTER CLOTHING: Mind Map
NCERT SCIENCE NOTES CLASS 7 CHAPTER 3
Fibre to Fabric Wool Animals which are a source of wool: Animals Breed Quality of fibric States where it is found Sheep Lohi Good quality wool Rajasthan, Punjab Rampur bushair Brown fleece Uttar Pradesh, Himachal Pradesh Nali Carpet…
NCERT SCIENCE NOTES CLASS 7 CHAPTER 2
Nutrition in Animals INTRODUCTION Animals get their food from plants, either directly by eating plants or indirectly by eating animals that eat plants. Some animals eat both plants and animals. Recall that all organisms including humans require food for growth,…
NCERT SCIENCE NOTES CLASS 7 CHAPTER 1
Nutrition in Plants What is Nutrition? Autotrophic It is a mode of nutrition in which organisms prepare their own food. Inorganic molecules like CO2 and H2O are converted into organic molecules like carbohydrates in the presence of sunlight and chlorophyll….