Class VII Science

Crystals of copper sulphate

PHYSICAL AND CHEMICAL CHANGES Class VII Chapter 6

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In our day today life almost everything is changing. Some are changing fast and easily visible, some others are very slow and not easily recognizable. e. g- Day, Night, Rotation of the Earth, Seasons, Weather, Daily Routine, Drying of Clothes, Cooking of Food, Rusting of Iron, Glowing of Bulb, Movement of Vehicles, Cutting of fruits, Inflating of balloons, Revolution of the Planets around the Sun, Melting of Ice, Iron rod becomes hot due to heating etc. So, changes are only permanent things in this world.

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Reflection of light

LIGHT Class VII Chapter 15

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Light is a form of energy that gives a sense of vision. Light helps in viewing any object when in returns back from that (reflection of light) to our eyes. We see the objects when the light lights up them. The study of light and its phenomenon is called ‘optics’.
e.g.- We see the pen because the light falling on the pen is reflected back to our eyes.
e.g.- When light enters from a ventilator of a dark room, we see the dust particles of air.

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Tropical rainforest in Assam, India

FOREST: OUR LIFELINE CLASS VII CHAPTER 17

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A vast area of land with thick density of trees and bushes is called forest. Forest is the natural habitat of variety of plants and animals. There are so many benefits of forests. The wildlife is dependent on forest. We get various products from forests. Various types of microbes, insects, reptiles, birds, animals etc live in forest. We get mesmerized to listen various kinds of sounds in the forest (or Jungle).

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WEATHER, CLIMATE AND ADAPTATIONS OF ANIMALS TO CLIMATE Chapter 7 Class 7

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Weather, Climate, Weather report, Elements of weather, Temperature, Rainfall, Humidity, Monsoon, Monsoon Types, Types of climate in India, Adaptation, Adaptive features, Polar region, Polar region countries, Polar region areas, Polar Bears, Penguins, Migrating birds, Migratory birds, Tropical rainforest, Elephants, Red eyed Frog, Lion Tailed Macaque, Toucan, New world Monkey

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RESPIRATION IN ORGANISMS Class 7 Chapter 10

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 Key Learning Points– Respiration, Breathing, Breathing rate, Inhalation, Exhalation, Respiratory system, Cellular(Internal) Respiration, Aerobic respiration, Anaerobic Respiration, Transpiration, Gills, Spiracles, Trachea(Wind Pipe) Introduction-We need energy to do every kind of work. This energy is obtained from oxidation i.e. burning of digested food in presence of oxygen inside the cells. In oxidation of food oxygen is

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