CBSE - Class 07 - Science

Online test Nutrition in Plants: Autotrophic and heterotrophic nutrition; parasites, saprophytes; photosynthesis. Coleus or any other plant with variegated leaves, alcohol, iodine solution, kit materials.

Online test Nutrition in Animals: Types of nutrition, nutrition in amoeba and human beings, Digestive system – human, ruminants; types of teeth; link with transport and respiration.

Online test Fibre to Fabric: Do some of our clothes come from animal sources? Which are these animals? Who rears them? Which parts of the animals yield the yarn? How is the yarn extracted? What kinds of clothes help us to keep warm?

Online test Heat: What kinds of clothes help us to keep warm? What is heat? What is the meaning of ‘cool’/‘cold’ and ‘warm’ ‘hot’? How does heat flow from/to our body to/ from the surroundings? Heat flow; temperature.

Online test Acids Bases and Salts: Why does turmeric stain become red on applying soap? Classification of substances into acidic, basic and neutral; indicators.

Online test Physical and Chemical Changes: Chemical substances; in a chemical reaction a new substance is formed. Test tubes, droppers, common pins, vinegar, baking powder.

Online test vWeather Climate and Adaptations of Animals to Climate: Polar Regions(polar bears, penguins), tropical rainforests(Lion-tailed Macaque, Elephant), Deserts-camels.

Online test Winds Storms and Cyclones: Properties of air, Wind- Wind Currents, Thunderstorms- cyclones-Effective safety measures, tornadoes-protection from tornado, precautionary Measures.

Online test Soil: Formation of soil, Soil profile(A-Horizon or topsoil, B-Horizon or middle layer, C-Horizon, Bedrock or D-Horizon), Constituents of soil(Soil Particles, Soil Water, Flora and Fauna, Soil Air, Humus), Types of soil( Sandy, Clayey, Loamy), Characteristics of soil(percolation Rates of water, Types of Crops Grown.

Online test Respiration in Organisms: Why do we/animals breathe? Do plants also breathe? Do they also respire? How do plants/animals live in water? Respiration in plants and animals.

Online test Transportation in Animals and Plants: How does water move in plants? How is food transported in plants?Why do animals drink water? Why do we sweat? Why and how is there blood in all parts of the body? Why is blood red? Do all animals have blood? What is there in urine?

Online test Reproduction in Plants: Why are some plant parts like potato, onion swollen – are they of any use to the plants? What is the function of flowers? How are fruits and seeds formed? How are they dispersed? - Vegetative, asexual and sexual reproduction in plants, pollination - cross, self pollination; pollinators, fertilisation, fruit, seed.

Online test Motion and Time: Why do people feel the need to measure time? How do we know how fast something is moving? Appreciation of idea of time and need to measure it. Measurement of time using periodic events. Idea of speed of moving objects – slow and fast motion along a straight line.

Online test Electric Current and its Effects: How can we conveniently represent an electric circuit? Why does a bulb get hot? How does a fuse work? How does the current in a wire affect the direction of a compass needle? What is an electromagnet?

Online test Light: Can we see a source of light through a bent tube? How can we throw sunlight on a wall? What things give images that are magnified or diminished in size? How can we make a coloured disc appear white?

Online test Water A Precious Resource: Where and how do you get water for your domestic needs? Is it enough? Is there enough water for agricultural needs? What happens to plants when there is not enough water for plants? Where does a plant go when it dies?

Online test Forests Our Lifeline: What are the products we get from forests? Do other animals also benefit from forests? What will happen if forests disappear? Interdependence of plants and animals in forests. Forests contribute to purification of air and water.

Online test Waste water Story: Where does dirty water from your house go? Have you seen a drain? Does the water stand in it sometimes? Does this have any harmful effect? - Sewage; need for drainage/sewer systems that are closed.