Exploring the Investigative World of Science — Practice

Q1. On the first page of each chapter of Class 8 Curiosity, students find a set of questions that are

• A. Compulsory examination questions
• B. Questions to be answered in the notebook only
• C. Invitations meant to spark curiosity, not for any exam
• D. Recap questions from Class 7

Q2. Which of these is one of the 'Probe and ponder' questions opening Chapter 1 of Class 8 Curiosity?

• A. Why is one side of a puri thinner than the other?
• B. Why does a magnet attract iron?
• C. Why is the sky blue?
• D. Why does a pendulum swing?

Q3. The 'Probe and ponder' page asks young readers to compare the count of

• A. Trees in a forest and people in a city
• B. Grains of sand on all beaches/deserts and stars in our galaxy
• C. Drops of water in the sea and atoms in a balloon
• D. Insects on a leaf and birds in the sky

Q4. According to the chapter, Class 8 takes 'the next step' into the

• A. Discovery-only world of science
• B. Memory-only world of science
• C. Investigative World of Science
• D. Theory-only world of science

Q5. The chapter recalls that in Grade 6 we discovered that science begins with

• A. Wonder, with simple 'Why?' and 'How?' questions
• B. Fixed answers from the teacher
• C. Reading classic literature
• D. Solving long calculations

Q6. According to the chapter, what did Grade 7 teach us about science?

• A. Science is fixed and complete
• B. Science is always evolving — each answer opens new questions
• C. Science is only experimental, never theoretical
• D. Science is only theoretical, never experimental

Q7. Complete the chapter's statement: 'We don't want you to just learn new facts, we want you to learn how to ___.'

• A. Memorise old facts faster
• B. Find new facts
• C. Copy facts from textbooks
• D. Ignore old facts

Q8. On the left-hand pages of Class 8 Curiosity, at the bottom, students will find the image of a

• A. Star
• B. Compass
• C. Root
• D. Flame

Q9. On the right-hand pages of Class 8 Curiosity, in the top corner, students will find the image of a

• A. Kite soaring in the sky
• B. Cloud and a rainbow
• C. Bird in a nest
• D. Hot-air balloon

Q10. The chapter says this year's journey will start by examining something as small as

• A. A grain of rice
• B. A leaf on a tree
• C. A single drop of water
• D. A spoon of soil

Q11. The chapter says we depend on which effect of electric current to keep us warm?

• A. Chemical effect
• B. Heating effect
• C. Magnetic effect
• D. Sound effect

Q12. According to the chapter, a stronger pressure difference in the air can lead to

• A. A gentle breeze
• B. Strong winds and sometimes cyclones
• C. Complete stillness of air
• D. A rainbow in the sky

Q13. The chapter's preview says that in materials that are solid, the tiny particles

• A. Cannot move much
• B. Move around freely
• C. Disappear completely
• D. Combine into one big particle

Q14. Watching the periodic cycles of the Moon's phases, the chapter says, allowed humans to come up with

• A. The first calendars
• B. The first telescopes
• C. The first electric clocks
• D. The first wheels

Q15. The chapter says that to do simple experiments, students don't need a fancy laboratory — even ___ at home is a wonderful place to observe and ask questions.

• A. Their schoolbag
• B. Their kitchen
• C. Their bedroom
• D. Their classroom