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The Wonderful World of Science: questions with answers

Class 6 Science, Chapter 1 (NCERT). 15 questions by concept, 5 with pictures. Open “Show answer” for the answer and why.

How to teach this chapter · Common misconceptions & worked visual for this chapter

Science as Curiosity and Exploration

Question 1

A learner asks questions and observes things carefully. Why is this part of science?

  1. (a)Because asking and observing help us understand the world and how things work.
  2. (b)Because questions are separate from science.
  3. (c)Because science is only about scoring marks by memorising facts.
  4. (d)Because science is only about using special equipment.
Show answer

(a) Because asking and observing help us understand the world and how things work.

Science begins with curiosity. Asking questions and observing help us explore the world and try to understand how things work.

Question 2

Science is compared to a giant and unending jigsaw puzzle. What does this comparison mean?

  1. (a)Science already has one finished answer, and discoveries only help us find it.
  2. (b)New discoveries only add facts and never change our understanding.
  3. (c)Every new discovery adds another piece, and new discoveries often change our understanding.
  4. (d)Science is compared to a puzzle only because it is difficult.
Show answer

(c) Every new discovery adds another piece, and new discoveries often change our understanding.

The comparison means that science keeps growing as new discoveries are made. New discoveries add another piece and may also change our understanding of the world.

Question 3

Which statement agrees with the idea that science is like a giant and unending jigsaw puzzle?

  1. (a)New discoveries add another piece and can change our understanding.
  2. (b)Once something is discovered in science, our understanding never changes.
  3. (c)Science is already finished forever, like a completed puzzle.
  4. (d)New discoveries add more pieces, but they never change our understanding.
Show answer

(a) New discoveries add another piece and can change our understanding.

The correct statement agrees that science grows with new discoveries. It also allows that new discoveries often change our understanding of the world.

Connected Questions Across Science Topics

Question 4

A student writes this under the heading Science questions: food, water, materials. What is missing from the student's answer?

Science questionsfoodwatermaterials?
  1. (a)More names, such as leaves and seeds, but no question
  2. (b)The list is enough because it has many science words
  3. (c)A question about what they are made of, how they change, or how we find out
  4. (d)A sentence saying water is more important than food and materials
Show answer

(c) A question about what they are made of, how they change, or how we find out

The examples food, water, and materials are not wrong by themselves. The missing part is asking questions about them. Science asks what things are made of, how they change, and how we can find out and understand them.

Question 5

A concept map shows life on Earth, the Moon, and stars as science examples. Some links are already drawn, and one possible new link is marked ?. Which grouping rule best matches the connected way to study the map?

life onEarththe Moonstars?
  1. (a)Keep stars apart from the other two because the three are too different to be linked.
  2. (b)Group life on Earth, the Moon, and stars with links across them because science ideas can be connected.
  3. (c)Put life on Earth, the Moon, and stars in separate boxes and draw no links between them.
  4. (d)Draw only the links already shown and leave out the link marked ?, because life on Earth and stars cannot be linked.
Show answer

(b) Group life on Earth, the Moon, and stars with links across them because science ideas can be connected.

The connected rule fits the idea that science examples are not only separate names in separate boxes. As we discover more, life on Earth, the Moon, and stars can be seen as linked.

Question 6

A statement says: "Science asks questions only about living things on Earth." Which change best fixes the statement?

EarthBeyond EarthplantanimalfoodwatermaterialsSunMoonstarsScience asks questions only aboutliving things on Earth. ?
  1. (a)Science asks questions only about the Sun, the Moon, and stars.
  2. (b)Science asks questions about Earth, plants, animals, food, water, materials, movement, and also the Sun, the Moon, and stars.
  3. (c)Science asks questions about everything a person can know.
  4. (d)Science asks questions about plants, animals, and food, but not about the Sun, the Moon, or stars.
Show answer

(b) Science asks questions about Earth, plants, animals, food, water, materials, movement, and also the Sun, the Moon, and stars.

The word only makes the statement too narrow. Science asks questions about many things on Earth and also about things beyond Earth. The best revision includes both parts of that range.

Scientific Method in Daily Life

Question 7

What decides whether a person is working like a scientist?

  1. (a)Having a scientist's job
  2. (b)Working in a laboratory
  3. (c)Doing any daily activity
  4. (d)Asking a question and checking to find the answer
Show answer

(d) Asking a question and checking to find the answer

Anyone who asks a question and checks to find the answer is working like a scientist, at home or anywhere else. A scientist's job or a laboratory is not needed, and an ordinary activity with no question or check does not count.

Question 8

A daily problem is being solved: a light bulb does not work. Which action best shows working like a scientist?

  1. (a)Switch on a working light without asking a question
  2. (b)Say it is only using a light bulb, so it is not connected with science
  3. (c)Ask whether the bulb or the switch is causing the light not to work, check it, and find the answer
  4. (d)Change something at once and stop without checking whether the bulb or switch is causing the problem
Show answer

(c) Ask whether the bulb or the switch is causing the light not to work, check it, and find the answer

Daily-life situations can use the scientific method when a question is asked, a reason is guessed, it is tested, and an answer is found. The correct action investigates the problem instead of only doing an ordinary activity or stopping at a quick action.

Question 9

Situation 1: switching on a working light without investigating a question. Situation 2: asking why a light fails and checking whether the bulb or switch caused it. Which situations involve scientific investigation?

  1. (a)Neither situation
  2. (b)Situation 1 only
  3. (c)Both situations
  4. (d)Situation 2 only
Show answer

(d) Situation 2 only

Situation 2 asks a question and checks a possible answer. The other situation is a routine activity without investigation. An everyday setting does not prevent scientific investigation.

Steps of the Scientific Method

Question 10

In the diagram, a pen stops writing and then the refill is checked to see how much ink is left. What goes in the missing box?

pen stopswriting?check therefill
  1. (a)Guess: the ink has finished
  2. (b)Guess: the ink has dried
  3. (c)Problem: the pen stopped writing
  4. (d)Final answer: the ink has finished
Show answer

(a) Guess: the ink has finished

Checking how much ink is left tests the guess that the ink has finished. Before the check, this is only a guess, not a final answer. The stopped pen is the problem, and the refill check does not test whether the ink has dried.

Question 11

A plan has started with a question and a possible guess, but it stops too soon. What should replace ? so the guess is used properly?

QuestionPossible guess?
  1. (a)Test the guess through more observations and analyse the results.
  2. (b)Test the guess through more observations but do not analyse the results.
  3. (c)Write the first guess as the final answer.
  4. (d)Make another guess and write it as the answer.
Show answer

(a) Test the guess through more observations and analyse the results.

The plan should not stop at the guess. A guess is a possible answer that must be tested through experiments or more observations, and the results must be analysed.

Question 12

A learner investigates why a pen stopped writing. The learner guesses that the ink finished, checks the refill, and finds that the guess is not correct. The learner then stops the investigation. What is the mistake in this plan?

  1. (a)The learner should say the ink-finished guess is correct
  2. (b)The learner should not have checked the refill
  3. (c)The learner stops instead of trying and testing another guess
  4. (d)There is no mistake because it is enough to stop after a wrong guess
Show answer

(c) The learner stops instead of trying and testing another guess

Checking the refill was a correct test of the ink-finished guess. The mistake is stopping after the first guess is found not correct. Another guess can be tried and tested.

Curiosity, Collaboration, and the Science Journey

Question 13

Some of your science questions will not be answered in Grade 6. What does this mean for the journey of science?

  1. (a)It means many things are still waiting to be explored, and the journey of science continues for many years.
  2. (b)It means science is only about answers that are already known.
  3. (c)It means the journey of science ends when Grade 6 is finished.
  4. (d)It means those questions did not work and should be left.
Show answer

(a) It means many things are still waiting to be explored, and the journey of science continues for many years.

Many things are waiting to be explored. Not all answers will be found in Grade 6. The journey of science continues for many years and includes wondering and asking questions.

Question 14

Why should a learner observe the surroundings keenly instead of only asking questions?

  1. (a)Because curiosity alone is the first and only thing needed.
  2. (b)Because observing is only for writing notes.
  3. (c)Because asking questions without observing carefully is enough.
  4. (d)Because learning science well needs both curiosity and keen observation of surroundings.
Show answer

(d) Because learning science well needs both curiosity and keen observation of surroundings.

To learn science well, the first and foremost thing is to be curious and observe surroundings keenly. Curiosity leads to posing questions and asking how and why, so questions should grow with careful observation.

Question 15

Both people are curious and want to find an answer. Way A: One learner tries to find the answer alone. Way B: The learner and friends work together to find the answer. Which way better fits the idea that science is rarely done alone?

  1. (a)Way A, because the question can begin with one learner.
  2. (b)Way B, because friends work together to find the answer.
  3. (c)Neither way, because friends cannot help in finding answers.
  4. (d)Way A, because working with friends only means copying.
Show answer

(b) Way B, because friends work together to find the answer.

Both situations begin with curiosity, but the important difference is collaboration. Science is rarely done alone, and scientists and friends can work together to find answers.

Common misconception in The Wonderful World of Science

Open full misconception guide →

What turns a guess into a conclusion?

Wrong

A sensible guess is enough to settle the question.

Why it feels right. My explanation fits what I see once.

Right

Test a guess against a comparison you can observe.

Worked example

Cloth A
Same starting wetness→Still air→Time to dry
Cloth B
Same starting wetness→Moving air→Time to dry
The two trials start alike. The comparison changes airflow and measures drying time.
  1. Place equal wet cloths in still air and moving air under otherwise similar conditions.
  2. Compare their drying times before deciding what airflow changes.