NCERT Solutions For Class 7 Science – Download PDFs
NCERT Solutions For Class 7 Science have been provided here to help the students in laying a strong foundation of the subject. The answers to the questions related to the topics present in NCERT Class 7 textbooks are explained in a simple and descriptive manner. These solutions will improve the quality of the answers the students write in the exam as they will start using a logical approach and methodology while answering the questions.
Class 7 Science NCERT Solutions Chapter-wise
BYJU’S has explained all the 7th class science concepts comprehensively. If there is any trouble in grasping the topics related to Science, students can refer to the chapter-wise solutions covered in CBSE Class 7 Science. Students can check out chapter-wise solutions from the links given below:
NCERT Solutions for Class 7 Science
Below students will find the description of all the chapters of CBSE class 7 science subject.
Chapter 1: Nutrition in Plants
In this lesson, students will learn about nutrients, mode of nutrition in plants, photosynthesis process, other modes of nutrition in plants, how nutrients are replenished in the soil.
Chapter 2: Nutrition in Animals
In an earlier chapter, we have learnt about nutrition in plants. Now in this chapter students will learn about nutrition in animals. The chapter starts with the mode of taking food into the body, and then the human digestive system is described in detail with a well-illustrated diagram. Then it describes the digestion of grass-eating animals. At the end digestion and feeding of amoeba is explained.
Chapter 3: Fibre and Fabric
This chapter explains the process of obtaining wool and silk. It describes the animals that yield wool and the process through which fibres are converted into wool. Then the topic of silk begins. It describes the life history of the silk moth and the process of obtaining silk from cocoons.
Chapter 4: Heat
In the chapter, students understand, how we find out whether an object is hot or cold, how to measure temperature. Then this chapter explains about the laboratory thermometer and transfer of heat. At the end it talks about the kind of clothes we wear in summer and winters.
Chapter 5: Acids, Bases and Salts
This chapter helps students in understanding the basic definition of acids and bases, types of natural indicators around us, the process of neutralisation and examples of neutralisation in daily life.
Chapter 6: Physical and Chemical Changes
Through this chapter, students will learn the Physical and Chemical changes through various activities. After this the chapter throws light on the topic, rusting of iron and crystallisation.
Chapter 7: Weather, Climate, and Adaptations of Animals to Climate
This chapter starts with the description of weather and climate. Then, it explains the effect of climate on living organisms and how they get adapted to the climate. The polar regions, the tropical rainforests are also explained at the end of this chapter.
Chapter 8: Winds, Storms and Cyclones
This chapter talks about the natural calamities that destroy human life and causes loss to the property. This chapter starts with the properties of air i.e
- Air exerts pressure
- High-Speed winds are accompanied by reduced air pressure
- Air expands on heating
Then the chapter discusses the various situations in which wind current is generated due to uneven heating on the earth. After that, the chapter explains about thunderstorms, cyclones, the destruction caused by cyclones, effective safety measures and how technology helps in protecting us from these disasters.
Chapter 9: Soil
Soil is important for life on earth. The chapter starts with the topic soil profile, which describes the different layers of soil. Then the topics like soil types, properties of soil, moisture in the soil, absorption of water by soil, soil and crops are elaborated.
Chapter 10: Respiration in Organisms
The chapter starts with an explanation of the respiration process. Then it talks about the breathing process, how we breathe, what we breathe out, how breathing happens in other animals. It also explains how fish breathe underwater and the process of respiration in plants.
Chapter 11: Transportation in Animals and Plants
In this chapter, students will learn about the transport of substances in animals and plants. The chapter explains the circulatory system, excretion in animals and transportation of underwater plants in detail.
Chapter 12: Reproduction in Plants
In this chapter, students will learn the various modes of reproduction. The Asexual reproduction takes place through budding, fragmentation and spore formation. Whereas sexual reproduction takes place through pollination and fertilization. At the end the chapter explains the fruits and seed formation and seed dispersal process.
Chapter 13: Motion and Time
This is a very interesting chapter that explains the concept of speed, measurement of time, how to measure speed. At the end of the chapter, the distance-time graph is described to represent the motion of object in pictorial form.
Chapter 14: Electric Current and its Effects
This chapter starts with the topic symbols of electric components. Then it describes the heating effect of electric current, magnetic effect of electric current, electromagnet and electric bell in detail.
Chapter 15: Light
In this chapter, students will get to know that light travels along straight lines. The concept of reflection of light, plane mirrors, spherical mirrors, images formed by lenses are also described in detail.
Chapter 16: Water – A Precious Resource
Water is essential for all living organisms. This chapter has been added to make students aware of water conservation. The chapter starts with how much water is available on earth. Then it talks about the water cycle and forms of water. Then it explains that groundwater is an important source of water so we must use it wisely. Further, the concept of depletion of water, water management has been described. The chapter also throws light on roles that humans can play to save water and the effect of water scarcity on plants.
Chapter 17: Forests – Our Lifeline
The chapter explains that forest is a system comprising various plants, animals and microorganisms. The various components of forest are interdependent on one another. The interaction between soil, water, air and living organisms take place in the forest. We should maintain our forest and plant new trees to maintain perfect balance in nature. Otherwise, it will affect our environment badly.
Chapter 18: Wastewater Story
Water is the lifeline for humans and animals on earth. Emphasizing this, the chapter explains what is sewage, treatment of pollutant water, wastewater treatment plant, better housekeeping practices, sanitation and disease, an alternative arrangement for sewage disposal and sanitation at public places.
Benefits of Class 7 NCERT Science Solutions
Our subject experts have explained all the concepts comprehensively with CBSE Class 7 Science revision notes and worksheets. If there is any trouble in comprehending a topic related to Science, the student can refer to the solutions related to every topic covered in CBSE Class 7 Science.
At BYJU’S students are also provided with previous year question papers and sample papers, solving previous year question papers and sample papers will help the students to get acquainted with the latest exam pattern as well as with the marking scheme.