Students can keep Class 7 Science Extra Questions and Class 7th Curiosity Chapter 1 The Ever Evolving World of Science Class 7 Important Extra Question Answer handy for quick reference during exams.
Class 7 Science Chapter 1 The Ever Evolving World of Science Extra Questions
Class 7 Science Chapter 1 Extra Questions on The Ever Evolving World of Science
The Ever Evolving World of Science Class 7 Very Short Question Answer
Question 1.
What might happen even if experiments confirm what we expect?
Answer:
They might lead to more questions.
Question 2.
What should you think like while doing experiments?
Answer:
A scientist.
Question 3.
What do scientists aim to do in their work?
Answer:
Scientists aim to understand how things work and why events happen.
The Ever Evolving World of Science Class 7 Short Question Answer
Question 1.
What is science and how does it help us understand the world around us?
Answer:
Science is the study of the natural world through observations, experiments, and facts. It helps us understand how things work, solve problems, and make informed decisions about the world around us.
Question 2.
Why is it important to step out of the classroom and engage in activities and experiments for learning science?
Answer:
It is important to step out of the classroom and engage in activities and experiments because they help connect theory with practice. Hands-on experiences make science more interesting, help us understand concepts better, and develop critical thinking skills.
The Ever Evolving World of Science Class 7 Long Question Answer
Question 1.
Discuss how scientific experiments and observations can lead to a deeper understanding of the environment and human activities.
Answer:
Scientific experiments and observations are crucial for understanding the natural world and the impact of human activities on the environment. Through hands-on experiments, like testing how materials conduct heat or electricity, we gain insights into the properties of materials and how they affect daily life. By asking questions about changes in nature, like why fruits ripen or how ice melts, we begin to understand deeper environmental processes such as the water cycle or energy flow. Furthermore, as we explore the relationship between human activities and nature, such as how deforestation or pollution affects the environment, we learn how to make more responsible choices. This knowledge not only helps us understand the world better but also empowers us to address environmental challenges and work towards a sustainable future.
Question 2.
Explain the importance of understanding the properties of different materials, and how does this helps in everyday life?
Ans. Understanding the properties of materials is essential because it helps us choose the right materials for specific uses. For example, metals are good conductors of electricity, so they are used in electrical wiring. Rubber is a poor conductor, so it is used for insulation. In everyday life, we interact with various materials without thinking about their properties, such as the clothes we wear (which are chosen for comfort and durability) or the tools we use (which are made of strong, durable materials). Knowledge of material properties helps engineers, manufacturers, and even consumers make informed choices about products, ensuring they are safe, efficient, and long-lasting.
Question 3.
How do scientific ideas inspire innovations in other areas of life?
Answer:
Scientific ideas often inspire technological and practical innovations in various fields. For example, the discovery of electricity led to innovations in lighting, communication, and transportation. Similarly, advancements in biology have led to the development of life-saving medicines and vaccines. Scientific principles in physics have led to the creation of machines, engines, and tools that make our lives easier. The application of scientific discoveries in technology allows us to solve real-world problems, improve efficiency, and enhance the quality of life. Thus, science serves as the foundation for many innovations in everyday life and various industries.
The Ever Evolving World of Science Class 7 Case Based Questions
Light and shadows are not only found around us at home. Even the Earth and the Moon can cast shadows, which causes eclipses. We also have day and night because of sunlight. To understand these things, we need to learn how the Earth spins on its axis, how the Moon moves around the Earth, and how the Earth moves around the Sun. These movements affect life on our planet. You will observe things, do fun experiments, and learn to think like a scientist. Even simple experiments can lead to more questions and learning.
Question 1.
What causes day and night on Earth?
Answer:
Day and night happen because the Earth rotates on its axis.
Question 2.
What do we need to understand to learn about eclipses?
Answer:
We need to know how the Earth and the Moon move and how they cast shadows.
Question 3.
Why should we do experiments while learning science?
Answer:
Experiments help us understand things better and ask more questions.
OR
What does it mean to think like a scientist?
Answer:
It means to observe, ask questions, and try to find answers by experimenting.
The Ever Evolving World of Science Extra Questions for Practice
Question 1.
What is the purpose of asking questions and exploring in science?
(a) To memorise facts
(b) To confirm known facts
(c) To discover new things and think critically
(d) To learn only from textbooks
Question 2.
Read the given statements and select the correct option.
Assertion (A): Scientists work together across the world.
Reason (R): Collaboration allows them to share ideas and solve problems more efficiently.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Question 3.
What happens when materials like batteries run out?
Question 4.
What circulates the nutrients obtained from food throughout our body?
Question 5.
Define curiosity.
Question 6.
How did early humans measure time before clocks?
Question 7.
What causes eclipses, day and night?
Question 8.
What role does science play in addressing environmental challenges?
Question 9.
What is the main purpose of doing science experiments?
V. Long Answer Type Questions (5 marks each)
Question 10.
What are the benefits of conducting experiments and asking questions in science? How does this lead to deeper understanding and further exploration?
Question 11.
Describe the formation of rain.
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