Case Based Questions: The Wonderful World of Science

Q1: Read the source and answer the question that follows

Aarav and Meera are in their classroom on the first day of their new science class. Their teacher asks them what they think science is. Aarav says science is about doing experiments in a lab, while Meera says it is about memorising facts from a book. Their teacher smiles and explains that science is actually a way of thinking, observing, and doing things to understand the world we live in. It is like a big adventure where we ask questions and try to find how things work.

The teacher also tells them that science is everywhere - from the depths of the ocean to the vastness of outer space, from the kitchen to the playground. She encourages both students to look around them with curiosity. Aarav then wonders why the stars shine at night, and Meera asks how a flower knows when to bloom. Their teacher says these are exactly the kind of questions that science helps us answer.

Q1. According to the passage, what is Science?
​A) Only doing experiments in a laboratory 
B) Memorising facts and figures from books 
C) A way of thinking, observing and doing things to understand the world 
D) Watching stars and flowers

Ans: C) A way of thinking, observing and doing things to understand the world

Q2. Why does the teacher say science is like a big adventure?
​Ans: The teacher says science is like a big adventure because it involves asking questions, exploring the world around us, and trying to understand how things work. There is always something new and exciting to discover.

Q3. Give two examples from the passage that show science is everywhere.
Ans: Two examples from the passage are - 
(i) the depths of the ocean and 
(ii) the kitchen. 
These show that science can be found in all places around us, not just in a laboratory.

Q2: Read the source and answer the question that follows

Riya's pen suddenly stopped writing during her class test. She panicked for a moment, then thought carefully. She asked herself, "Why did my pen stop writing?" Her first guess was that the ink had finished. She opened the pen and checked the ink refill - but it was not empty. So she made another guess - maybe the ink had dried up at the tip. She tried scribbling hard on a rough page, and the pen started working again!

Riya's teacher saw this and told her that she had just used the scientific method without even realising it. The scientific method involves observing a problem, making a guess, testing the guess, and analysing the result. The teacher explained that scientists all over the world follow the same steps to solve bigger problems and make new discoveries. She added that anyone who asks questions and tries to find answers is working just like a scientist.

Q1. What was Riya's first guess about why her pen stopped writing?
​A) The ink had dried up at the tip 
B) The pen was broken 
C) The ink had finished 
D) The refill was too old

Ans: C) The ink had finished

Q2. How did Riya use the scientific method to fix her pen?
​Ans: Riya observed that her pen stopped writing, guessed the ink was finished, tested this by checking the refill, and when that did not work, made another guess that the ink had dried up. She tested this by scribbling hard, and the pen worked. This is exactly how the scientific method works.

Q3. Who can be called a scientist, according to the teacher?
​Ans: According to the teacher, anyone who asks questions and tries to find answers to them is working like a scientist. You do not need to be in a lab - even solving small everyday problems using the scientific method makes you a scientist.

Q3: Read the source and answer the question that follows

Kabir and Ananya are in the school garden, looking at a caterpillar slowly moving on a leaf. Kabir wonders how a tiny caterpillar can one day become a beautiful butterfly. Ananya says she has seen a seed grow into a tall plant, and she wonders how plants and animals grow. Their science teacher, who is passing by, tells them that curiosity is the most important quality for learning science.

She explains that when we are curious, we start asking questions - "how?" and "why?" These questions lead us to observe and explore. The teacher also tells them that science is rarely done alone. Scientists across the world work in large teams and share their findings with each other. She encourages Kabir and Ananya to always keep asking questions and to remember that the world is full of mysteries just waiting to be explored together.

Q1. What does the science teacher say is the most important quality for learning science?
​A) Intelligence 
B) Curiosity 
C) Memory 
D) Speed

Ans: B) Curiosity

Q2. How does asking questions help us in science?
​Ans: When we ask questions like "how?" and "why?", we become curious and start to observe and explore the world around us. These questions lead us to look for answers, which is the starting point of scientific learning and discovery.

Q3. Why is it said that science is rarely done alone?
​Ans: Science is rarely done alone because scientists across the world work together in large teams. They share their findings and help each other solve bigger problems. Working together makes discoveries easier and more enjoyable.