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FAQs on Class 7 Science: Sample Question Paper - 3 - Science Class 7

1. What are the main branches of science?
Ans. The main branches of science are physics, chemistry, biology, and earth science. Physics deals with the study of matter, energy, and their interactions. Chemistry focuses on the composition, properties, and reactions of substances. Biology is the study of living organisms and their processes. Earth science includes the study of the Earth's structure, geology, weather, and climate.
2. What is the importance of studying science?
Ans. Studying science is important as it helps us understand the world around us. It allows us to make sense of natural phenomena and discover new knowledge. Science also helps in developing critical thinking and problem-solving skills. It provides the foundation for technological advancements and innovations that improve our lives. Additionally, studying science promotes curiosity, creativity, and a deeper understanding of the universe.
3. How does the scientific method work?
Ans. The scientific method is a systematic approach used by scientists to investigate natural phenomena. It involves several steps, including observation, formulation of a hypothesis, designing and conducting experiments, collecting and analyzing data, and drawing conclusions. The process starts with making observations and asking questions, followed by forming a testable hypothesis. Experiments are then conducted to gather data, which is analyzed to draw conclusions and make further predictions. The scientific method is iterative, meaning that it can be repeated and refined to improve the understanding of a specific topic.
4. What is the difference between pure science and applied science?
Ans. Pure science refers to the pursuit of scientific knowledge for its own sake, without any immediate practical applications. It focuses on expanding our understanding of natural phenomena and exploring fundamental principles. Examples of pure science include theoretical physics, pure chemistry, and basic biological research. On the other hand, applied science is the practical application of scientific knowledge to solve real-world problems or develop new technologies. It involves using scientific principles and theories to address specific challenges in various fields such as engineering, medicine, and agriculture.
5. How does science impact society?
Ans. Science has a significant impact on society in various ways. It has led to advancements in healthcare, technology, and communication, improving the quality of life for many people. Scientific research has contributed to the development of new medicines, treatments, and medical procedures, leading to longer and healthier lives. It has also resulted in the creation of innovative technologies that have transformed industries and increased efficiency. Moreover, science plays a crucial role in addressing environmental issues, promoting sustainable development, and understanding the natural world.
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