All of the science chapters from 7th grade are covered in detail. Students can refer to the CBSE Class 7 Science.
Chapter 1: Nutrition in Plants.
Students will study nutrients, plant nutrition modes, photosynthesis, other plant nutrition modes, and how nutrients are supplied in the soil in this lesson.
Chapter 2: Animal Nutrition
We learned about plant nutrition in a previous chapter. Students will now learn about animal nutrition in this chapter. The chapter begins with a description of how food enters the body, followed by a detailed description of the human digestive system with a well-illustrated picture. The digestion of grass-eating animals is next described. Finally, the digestion and feeding of amoebae are discussed.
Fibre to Fabric (Chapter 3)
The procedure for acquiring wool and silk is described in this chapter. It describes the animals that produce wool and the process of turning fibres into wool. Then comes the discussion about silk. It details the silk moth's life cycle and the procedure of extracting silk from cocoons.
4th Chapter: Heat
Students will learn how to determine whether an object is hot or cold and measure temperature in this chapter. The laboratory thermometer and heat transport are next discussed in this chapter. Finally, it discusses the types of clothing we wear in the summer and winter.
Acids, Bases, and Salts (Chapter 5)
This chapter assists students in grasping the fundamental definitions of acids and bases, the various types of natural indicators found around us, the neutralisation process, and examples of neutralisation in everyday life.
Physical and Chemical Changes (Chapter 6)
Students will learn about physical and chemical changes through several exercises in this chapter. Following that, the chapter discusses rusting and crystallisation of iron.
Weather, Climate, and Animal Adaptations to Climate (Chapter 7)
The weather and climate are described first in this chapter. The book then discusses how climate affects living beings and how they adapt to it. The arctic regions and tropical rainforests are also discussed at the end of this chapter.
Winds, Storms, and Cyclones (Chapter 8)
This chapter discusses natural disasters that result in the loss of human lives and property. This chapter begins with air's qualities, i.e.
Pressure is exerted by air.
Reduced air pressure is associated with high-speed winds.
When air is heated, it expands.
The chapter next goes through the numerous scenarios in which wind current is generated due to uneven ground heating. Following that, the chapter discusses thunderstorms, cyclones, cyclone destruction, effective safety measures, and how technology can assist protect us from these calamities.
9th Chapter: Soil
The importance of soil to life on Earth cannot be overstated. The first topic in the chapter is soil profile, which describes the various layers of soil. Then, issues such as soil kinds, soil qualities, moisture in the soil, soil absorption of water, soil and crops are discussed.
Respiration in Organisms (Chapter 10)
The chapter begins with a description of the respiratory system. The book then explains the breathing process, including how we breathe, what we breathe out, and how breathing works in other species. It also describes how fish breathe underwater as well as how plants breathe.
Transportation in Animals and Plants (Chapter 11)
Students will learn about the transfer of chemicals in animals and plants in this chapter. The circulatory system, animal waste, and underwater plant transportation are all covered in-depth in this chapter.
Plant Reproduction (Chapter 12)
Students will study the many forms of reproduction in this chapter. Budding, fragmentation, and spore generation are all used in asexual reproduction. Pollination and fertilisation are used to reproduce sexually, whereas pollination and fertilisation are used to reproduce sexually. The chapter concludes with an explanation of the production of fruits and seeds and the mechanism of seed distribution.
Electric Current and Its Effects (Chapter 14)
This chapter begins with a discussion of electrical component symbols. The heating impact of electric current, the magnetic effect of electric current, the electromagnet, and the electric bell are then described in detail.
15th Chapter: Light
Students will learn that light travels in straight lines in this chapter. The concept of light reflection, plane mirrors, spherical mirrors, and pictures created by lenses are all thoroughly discussed.
Water — A Valuable Resource (Chapter 16)
All living organisms require water to survive. This chapter was introduced to raise student awareness of the importance of water conservation. The chapter begins with a discussion on the amount of water accessible on the planet. The water cycle and other types of water are then discussed. Then it says that groundwater is a valuable supply of water and that we must use it properly. The concept of water depletion and water management has also been discussed. The chapter also discusses human roles in water conservation and the impact of water scarcity on plants.
Forests - Our Lifeline (Chapter 17)
According to the chapter, the forest is a system made up of numerous plants, animals, and microorganisms. The forest's diverse components are interdependent on one another. The forest is where soil, water, air, and live organisms interact. To maintain perfect equilibrium in nature, we should maintain our forests and grow new trees. Otherwise, it will harm our ecosystem.
The Wastewater Story (Chapter 18)
Humans and animals on the planet rely on water for survival. The chapter emphasises this by explaining what sewage is, how to treat polluted water, how to build a wastewater treatment plant, improve housekeeping practices, sanitation and disease, and find an alternative for sewage disposal and sanitation in public spaces.