NCERT Solutions for Class 7 Science: NCERT Solutions for Class 7 Science provide chapter-wise answers to all the questions in the Science book titled Curiosity. The book explores the ever-evolving world of science, focusing on topics such as the nature of substances, electricity, light, and the life processes of plants and animals.
These NCERT solutions are prepared strictly according to the latest NCERT guidelines. They can be used for daily practice, quick revision, and understanding important concepts taught in class. Science demands concept clarity and regular practice, and these NCERT solutions Class 7 serve as an effective study tool for students.
NCERT Solutions for Class 7 Science Latest Chapter wise 2026 27
| S.No. | Chapter Name & Topic |
| 1 | Chapter 1 - The Ever-Evolving World of Science |
| 2 | Chapter 2 - Exploring Substances: Acidic, Basic, and Neutral |
| 3 | Chapter 3 - Electricity: Circuits and their Components |
| 4 | Chapter 4 - The World of Metals and Non-metals |
| 5 | Chapter 5 - Changes Around Us: Physical and Chemical |
| 6 | Chapter 6 - Adolescence: A Stage of Growth and Change |
| 7 | Chapter 7 - Heat Transfer in Nature |
| 8 | Chapter 8 - Measurement of Time and Motion |
| 9 | Chapter 9 - Life Processes in Animals |
| 10 | Chapter 10 - Life Processes in Plants |
| 11 | Chapter 11 - Light: Shadows and Reflections |
| 12 | Chapter 12 - Earth, Moon, and the Sun |
NCERT Solutions for Class 7 Science Chapter overview
Chapter 1 - The Ever-Evolving World of Science
The first chapter explains that science is a way of understanding the world through observation and experimentation. It shows the ever-evolving nature of scientific ideas and how they change when new evidence is discovered. Students learn how scientists use experiments to study and explain natural phenomena. The chapter also discusses how scientific knowledge develops over time through collaborative effort and becomes more reliable through questioning, testing, and continuous improvement.
Chapter 2 - Exploring Substances: Acidic, Basic, and Neutral
This chapter explains how substances are classified based on their behaviour in water. Some substances are acids, some are bases, and some are neutral, meaning they are neither acidic nor basic. Students learn to identify them using indicators such as litmus and turmeric with change in colour. The chapter also explains neutralisation, where an acid and a base react to form salt and water. These concepts are directly related to everyday life through examples like antacids for acidity, soil treatment in agriculture, and the use of cleaning products.
Chapter 3 - Electricity: Circuits and their Components
Chapter 3 explains what electric current is and how it flows through a closed circuit. It discusses the main components of a simple circuit, such as a battery, wires, switch, and bulb, along with the difference between open and closed circuits. Students also learn about conductors and insulators. The chapter introduces circuit diagrams and the use of symbols to represent different electrical components. It further connects these concepts to real-life applications like torches, switches, and other battery-operated devices. Through simple activities, students develop a basic understanding of how electricity works in everyday life.
Chapter 4 - The World of Metals and Non-metals
This chapter teaches the classification of materials based on their physical and chemical properties. It discusses metals and non-metals along with their characteristics and explains concepts such as conductivity, malleability, ductility, and reactivity. Students also learn about corrosion and rusting of iron, along with basic chemical reactions involving metals. The chapter also explains the practical uses of different materials in everyday life. Through different experiments, students understand why materials are selected for specific purposes and how they are important in daily activities.
Chapter 5 - Changes Around Us: Physical and Chemical
This chapter explains physical and chemical changes and differences between them. It discusses physical changes, where only the state, size, or shape of a substance changes, and chemical changes, where new substances with different properties are formed, such as rusting and burning. Students also learn about reversible and irreversible changes. The chapter also explains how factors like temperature and surrounding conditions can affect the rate of change.
Chapter 6 - Adolescence: A Stage of Growth and Change
Adolescence is a stage of rapid physical and emotional development caused by hormonal changes in the body. The chapter discusses puberty and the development of secondary sexual characteristics during this period. It explains the role of hormones and important glands such as the pituitary and gonads in controlling growth and development. It also covers hygiene, proper nutrition, physical and emotional changes, and the importance of maintaining healthy habits. Through these concepts, students develop an understanding of the changes experienced during adolescence and the need for balanced growth and overall health.
Chapter 7 - Heat Transfer in Nature
Heat is a form of energy that flows from a hotter object to a colder one. This chapter discusses the three modes of heat transfer, conduction, convection, and radiation, and how each takes place in different situations. It also explains heat transfer through solids, liquids, gases, and even without a medium, using everyday examples such as boiling water, and heat from the Sun. It introduces thermal expansion and explains how heat related concepts are connected to daily life, including cooking, weather patterns, and insulation. The chapter also helps students understand how different materials gain, lose, and transfer heat at different rates.
Chapter 8 - Measurement of Time and Motion
Motion is the change in position of an object with respect to time. This chapter talks about the basic formulas used to describe motion, such as distance, time, and speed, along with the relation between them. It also discusses different types of motion, including rectilinear, circular, periodic, and oscillatory motion, using examples from everyday life. The chapter introduces measurement tools like clocks and speedometers and explains their role in studying movement. Through basic numerical problems, students develop an understanding of how motion is measured.
Chapter 9 - Life Processes in Animals
Animals need energy to survive, which they obtain through nutrition and respiration. This chapter talks about how digestion breaks food into simpler substances and how respiration uses oxygen to release energy from food. It also discusses the role of the circulatory system in transporting nutrients, oxygen, and other substances throughout the body. The chapter introduces the excretory system and explains how waste products such as urea are removed from the body. Through these concepts, students understand how the digestive, respiratory, circulatory, and excretory systems work together to keep the body functioning properly.
Chapter 10 - Life Processes in Plants
Plants make their food through photosynthesis using sunlight, water, carbon dioxide, and chlorophyll. This chapter explains how plants prepare food and transport water, minerals, and nutrients through different tissues. It discusses the role of xylem in carrying water and minerals and phloem in distributing food to various parts of the plant. The chapter also covers plant respiration and how energy is released from food. Students learn about stomata and their role in gas exchange, along with transpiration and how it helps in cooling the plant and moving water upward.
Chapter 11 - Light: Shadows and Reflections
This chapter explains light, the formation of shadows, and the bouncing back of light called reflection. It discusses the laws of reflection, including that the angle of incidence is equal to the angle of reflection. Students also learn about plane mirrors, mirror images, and the basic properties of images formed through reflection. Through simple activities, the chapter helps students understand the behaviour of light.
Chapter 12 - Earth, Moon, and the Sun
Chapter 12 explains the movements of the Earth, the Sun, and the Moon, and gives a basic understanding of solar and lunar eclipses. It also introduces celestial bodies, the solar system, orbits, and motion in space. Through these ideas, students learn how the movement of celestial objects is connected to natural phenomena observed from Earth and develop curiosity about space and astronomy.
