Class 8 Science Chapter 1: Exploring the Investigative World of Science – NCERT Solutions & Study Guide

Question 1.
Probe and Ponder (Page 1)

Is there a question that makes you curious about the world?
Write it here! __________________________________

Answer:

Why does rice soften more quickly in a pressure cooker compared to an open pot?
Why do apple slices change color and turn brown after being cut and left exposed?
Why does ice dissolve more rapidly in warm water than in cold water?

(Questions may differ)

Question 2.

Why has nature created such a vast variety of plants and animals? (Page 1)

Answer: Nature has produced an enormous diversity of plants and animals to sustain balance within ecosystems.

Question 3.

What symbols are used in the book to represent deep knowledge and imagination, respectively? 

(Page 2)

Answer: A root at the base of the left pages symbolizes deep knowledge, while a kite at the top of the right pages stands for curiosity and imagination.

Question 4.

What does it mean to investigate like a scientist? (Pages 2, 6, 7)

Answer: It involves posing focused questions, conducting controlled experiments, observing carefully, taking measurements, and reaching conclusions step by step.

Question 5.

What is the importance of curiosity in Science? (Page 2)

Answer: Curiosity forms the foundation of Science. When we ask “why” and “how,” we initiate investigations and open the door to new discoveries.

Question 6.

What scientific topics will be covered in the textbook this year? (Pages 3, 4, 5)

Answer: 

The chapters that will be included this year are:

• Microorganisms and their impact on health
• Electricity and the effects it produces
• Force, pressure, and different types of motion
• Particles, elements, compounds, and mixtures
• Light: reflection, mirrors, and lenses
• Phases of the Moon and different types of calendars
• Ecosystems and issues related to climate change

Question 7.

How can human activity affect the Earth’s climate? (Page 5)

Answer: Activities such as burning fossil fuels and cutting down forests can alter Earth’s temperature, disturb climate patterns, and lead to significant harmful effects.

Question 8.

Why is one side of a puri thinner than the other? (Page 6)

Answer: When a puri is fried, steam builds up inside it, causing one side to expand more and become thinner. This effect can vary based on the dough’s thickness, the oil’s temperature, and the way the puri is placed into the oil.

Question 9.

Do puris puff better when made fresh or from stored dough? (Page 7)

Answer: Puris tend to puff more easily when prepared with fresh dough. Fresh dough retains proper moisture and softness, helping the puris rise well. In contrast, stored dough often becomes dry and firm, which prevents the puris from puffing properly.

Question 10.

What is a systematic investigation? (Page 7)

Answer: A method in which only one variable is altered while all others remain constant, with careful observations and accurate recording throughout.

Investigating Science: Curiosity and Systematic Exploration

Class 8 Science Chapter 1, Exploring the Investigative World of Science, introduces students to the joy of scientific inquiry. Through curiosity-driven questions, learners discover how everyday observations can unfold the secrets of nature.

By learning how to ask the right questions and conduct simple experiments, students build a solid scientific foundation. This chapter from the latest NCERT Solutions 2025-26 highlights the importance of real-world examples for understanding core concepts.

To excel, regularly review key points, relate them to daily life, and remain observant. These Class 8 Science strategies are essential for exam success and long-term retention of scientific skills.