Chapter 1: The Wonderful World of Science
Comprehensive Exercise (Made for exam preparation)
Class 6 Science
Question 1: Choose the correct option (Multiple Choice Questions):
1. What is science?
Answer: (B) A way of thinking, observing and doing things.
2. People who work to solve problems or discover new things are called:
Answer: (C) Scientists.
3. What does the title of the science book 'Curiosity' mean?
Answer: (A) The desire to know or learn something.
4. In this chapter, science is compared to a:
Answer: (B) Giant jigsaw puzzle.
5. What is the first step in finding an answer to a question on our own?
Answer: (B) Observing something interesting.
Question 2: Fill in the blanks with the appropriate words:
- 1. Science is a way to understand the world and uncover the secrets of the universe.
- 2. The most important thing for scientific thinking is Curiosity.
- 3. We test our guessed answers through experiments or more observations.
- 4. A person wondering why the dal has spilled out of the cooker is also working like a scientist.
- 5. To be a wise person, you must always be a "whys" person.
Question 3: State whether the following statements are True or False:
- 1. New discoveries often change our understanding of the world.
Answer: True. - 2. Science is limited only to the things found on Earth.
Answer: False. - 3. Science is an unending process with no limit to what we can discover.
Answer: True. - 4. A bicycle repairman thinking about how the air leaked out is not thinking like a scientist.
Answer: False. - 5. Science is rarely done alone; scientists across the world work together.
Answer: True.
Question 4: Match the items in Column 'A' with the correct items in Column 'B':
| Column 'A' | Column 'B' |
|---|---|
| 1. Curiosity | (a) Analysing the results |
| 2. Final step of the scientific method | (b) Desire to uncover secrets of the universe |
| 3. Objects in outer space | (c) Giant jigsaw puzzle |
| 4. Example of everyday science | (d) Dal spilling out of a cooker |
| 5. Science is compared to | (e) Sun, Moon, and stars |
Correct Matches:
- 1 → (b) Desire to uncover secrets of the universe
- 2 → (a) Analysing the results
- 3 → (e) Sun, Moon, and stars
- 4 → (d) Dal spilling out of a cooker
- 5 → (c) Giant jigsaw puzzle
Question 5: Classify the following items into "Things on Earth" and "Things in Outer Space":
Items: 1. The Sun, 2. Depths of the ocean, 3. The Moon, 4. Vast forest, 5. Millions of shining stars.
- Things on Earth: 2. Depths of the ocean, 4. Vast forest.
- Things in Outer Space: 1. The Sun, 3. The Moon, 5. Millions of shining stars.
Question 6: Answer the following questions in one sentence:
1. What does science help us understand?
Answer: Science helps us understand the world we live in and uncover the secrets of the universe.
2. What happens when a new discovery is made in science?
Answer: Every new discovery adds another piece to the giant jigsaw puzzle of science.
3. How do we test our guesses to find correct answers?
Answer: We test our guesses through experiments or more observations.
4. Name some everyday materials mentioned in the chapter that we will explore.
Answer: We will explore materials like paper, metal key, plastic ruler, rubber eraser, magnet, and clothes.
5. How is science similar to children jumping in rain puddles?
Answer: Just like children enjoying the rain, science is all about joyful exploration.
Question 7: Give scientific reasons:
1. Reason: Science is called an unending jigsaw puzzle.
Answer: Because every new discovery adds a new piece to our knowledge and leads to more questions, so there is no limit to what we can discover.
2. Reason: We are all scientists in our daily lives.
Answer: Because just like scientists, we also observe problems (like a non-working pen or a leaking tyre), ask questions, guess answers, and test them to find solutions.
3. Reason: It is necessary to perform experiments and observations.
Answer: Because experiments and observations are the only ways to test whether our guessed answers are correct or not.
4. Reason: Curiosity is the most important thing in science.
Answer: Because without the desire to know and asking "Why?", we cannot begin to explore or understand how things work.
5. Reason: It is good to ask friends for help in finding answers.
Answer: Because science is rarely done alone, and it is always more fun and easier to solve problems and discover things together with friends.
Question 8: Answer the following questions in short:
1. List the 5 steps of finding an answer to a question using the scientific method.
Answer: The 5 steps are:
- Observe something interesting.
- Wonder and ask a question about it.
- Guess a possible answer.
- Test the guess through experiments or observations.
- Analyse the results to see if it answers the question.
2. Write any four topics that Class 6 students will explore in this science book.
Answer: Students will explore: (1) Diversity in plants and animals. (2) The Sun, Moon, and stars in outer space. (3) Different materials around us. (4) States of water and weather changes.
3. How is a bicycle mechanic or an electrician similar to a scientist? Explain with an example.
Answer: When an electrician tries to find why a bulb is not working or a mechanic finds where a tyre is leaking, they observe the problem, guess the cause, and test it to fix it. This is exactly how the scientific method works.
4. What is the main message of the chapter "The Wonderful World of Science"?
Answer: The main message is that science is a joyful exploration of our surroundings. We should remain curious, observe things keenly, and always ask "Why?" to understand the world.
5. Can our understanding of the world change with new discoveries? Explain.
Answer: Yes, new discoveries can change our understanding. Like in a jigsaw puzzle, we might realise a piece was put in the wrong place, so new facts correct our old knowledge and give us a better understanding.