Students rely on Class 8 Science Extra Questions and Class 8th Curiosity Chapter 1 Exploring the Investigative World of Science Important Extra Question Answer to improve their grades.
Class 8 Science Chapter 1 Exploring the Investigative World of Science Extra Questions
Class 8 Science Chapter 1 Extra Questions on Exploring the Investigative World of Science
Exploring the Investigative World of Science Class 8 Very Short Question Answer
Question 1.
What is the first step in a scientific investigation?
Answer:
The first step is to ask a clear and curious question based on observations.
Question 2.
Why is the kitchen described as a laboratory in this chapter?
Answer:
This is because we can observe and experiment with everyday phenomena in the kitchen.
Question 3.
What should we do after completing one round of experiments?
Answer:
We should ask new questions and think of ways to improve our investigation.
Question 4.
How do vaccines help our body?
Answer:
Vaccines help our body by training the immune system to fight infections.
Question 5.
What natural events helped humans develop early calendars?
Answer:
The phases of the Moon and the movement of the Sun helped develop calendars.
Question 6.
What skill helps scientists improve their understanding from experiments?
Answer:
The skill of making careful observations and analysing results helps scientists improve their understanding.
Question 7.
What is an ecosystem?
Answer:
An ecosystem is a community of living organisms interacting with their environment.
Question 8.
What is the main reason behind climate change on the Earth?
Answer:
Human activities like pollution and greenhouse gas emissions are the main reasons of climate change.
Question 9.
Name one thing that makes Earth suitable for life.
Answer:
Earth has liquid water, which is essential for life.
Question 10.
What protects the Earth from harmful UV rays?
Answer:
The Earth’s atmosphere protects us from harmful UV rays.
Exploring the Investigative World of Science Class 8 Short Question Answer
Question 1.
What is a systematic investigation? How is it different from casual observation?
Answer:
Systematic investigation is a step-by-step method involving clear questions, controlled experiments, and careful observations. Unlike casual observation, it requires changing one variable at a time while keeping others constant, so we can understand the exact cause of a result.
Question 2.
What are the roles of the root and kite symbols in your science textbook?
Answer:
The root on the left-hand pages represents deep and strong foundational knowledge connected to tradition and nature. The kite on the right-hand pages represents the freedom of creative thinking and curiosity, encouraging us to explore new ideas and think creatively. Together they show the balance needed in scientific investigation.
Question 3.
How do the heating and magnetic effects of electric current help us in daily life?
Answer:
The heating effect of electric current helps us cook food and keep warm through devices like toasters and heaters. The magnetic effect is used in motors and machines, enabling fans, mixers, and other appliances to function.
Question 4.
How does light behave when it hits a mirror and a lens?
Answer:
When light hits a mirror, it reflects back, forming an image. With a lens, light bends as it passes through, allowing it to focus or spread out, which is how glasses or magnifying lenses work.
Question 5.
What causes the phases of the Moon?
Answer:
The phases of the Moon are caused by the changing positions of the Earth, Moon, and Sun. As the Moon orbits the Earth, different portions of its sunlit side become visible, creating New Moon, Full Moon, and other phases.
Question 6.
What do scientists do when they find new questions during an investigation?
Answer:
Scientists design further experiments to explore the new questions. They modify their earlier experiments, continue observations, and gather more evidence to refine or expand their understanding.
Question 7.
Why is observation a key part of investigation?
Answer:
Observation helps scientists gather data during experiments. Accurate observations allow them to detect patterns, draw conclusions, and understand cause-and-effect relationships in the natural world.
Exploring the Investigative World of Science Class 8 Long Question Answer
Question 1.
What is meant by ‘investigative science’? How does it differ from just learning facts?
Answer:
Investigative science means exploring the world by asking focused questions, designing experiments, making careful observations, and using those observations to understand how things work. It encourages curiosity, critical thinking, and hands-on learning.
Unlike memorising facts, investigative science teaches students how to find new facts themselves. For example, investigating why a puri puffs up involves changing one factor at a time and studying its effect. This process builds scientific thinking and problem-solving skills, rather than just collecting information.
Question 2.
What qualities should a young scientist develop to become a good investigator, as suggested in the chapter?
Answer:
A young scientist should develop curiosity to ask questions, careful observation to notice details, and creativity to think of new possibilities. They must also learn to plan and carry out experiments in a systematic way such as changing one factor at a time and keeping others constant.
Recording data honestly, thinking critically about what the results mean, and being open to asking more questions are also important. These habits not only help in science but also in everyday problem-solving and decision-making.
Exploring the Investigative World of Science Class 8 Quiz Questions
Question 1.
What helps fight infections and builds immunity?
Answer:
Vaccines
Question2.
What can a large difference in air pressure cause?
Answer:
Strong winds or cyclones
Exploring the Investigative World of Science Class 8 Case Based Questions
Question 1.
A teacher asked students to come up with questions from their daily lives. One student asked, “Why does a balloon burst when pricked?” Another asked, “Why is one side of the puri thinner than the other?” The class discussed how to explore such questions using curiosity, observation, and simple experiments.
They learned that scientific thinking starts with asking questions and looking for evidencebased answers.
I. Why is asking questions important in Science?
II. What role does observation play in scientific thinking?
III. How can simple experiments help answer big questions?
OR
What does it mean to think like a scientist in everyday life?
Answer:
I. Asking questions leads to exploration and deeper understanding of how things work.
II. Observation helps gather evidence and recognise patterns that lead to conclusions.
III. Simple experiments can help test ideas and reveal scientific principles behind everyday events.
OR
Thinking like a scientist means being curious, asking “why,” and using evidence to explore and explain.
Exploring the Investigative World of Science Extra Questions for Practice
Multiple Choice Questions
Question 1.
Which of the following is a good practice during a scientific experiment?
(a) Changing many variables at once
(b) Ignoring unusual results
(c) Keeping detailed notes of observations
(d) Drawing conclusions before testing
Question 2.
Read the given statements and select the correct option.
Assertion (A): Scientific investigation begins with curiosity and questioning.
Reason (R): Only trained scientists are allowed to investigate scientifically.
(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 short answer type questions
Very Short Answer Type Questions
Question 1.
What is meant by systematic investigation?
Question 2.
Name two things you must keep constant while doing a fair experiment.
Question 3.
What is the role of curiosity in science?
Short Answer Type-I Questions
Question 1.
Why is it important to note observations while performing an experiment?
Question 2.
What happens if you prick a hole in the puri before frying?
Short Answer Type-II Questions
Question 1.
How are the phases of the Moon an example of careful observation and pattern recognition?
Question 2.
Mention three qualities or steps that help you think like a scientist. Explain briefly.
Long Answer Type Questions
Question 1.
Explain the importance of both observation and creative thinking in scientific investigations. Use examples from daily life to support your answer.
Question 2.
Explain how the design of the textbook (roots and kites) connects to the way science should be explored.