Important Questions for Class 8 Science Chapter 11 Download PDF

Preparing Important Questions for Class 8 Science Chapter 11 - Keeping Time with the Skies is one of the best ways to revise the chapter before exams. These questions cover all the key concepts from the NCERT syllabus, including the phases of the Moon, lunar and solar calendars, celestial objects, and artificial satellites. 

 Practising them regularly helps students strengthen their conceptual understanding, improve problem-solving skills, and gain confidence in answering both multiple-choice and descriptive questions. These carefully selected questions are ideal for school exams, unit tests, and annual examinations. 

Important Questions for Class 8 Science Chapter 11 

Important Questions for Class 8 Science Chapter 11 help students revise the chapter quickly before exams. These important questions cover key NCERT concepts such as the Moon's phases, calendars, celestial objects, and artificial satellites, improving conceptual understanding and exam readiness. 

Q1. Which of the following is the correct order of the main moon phases?

A. New Moon → Full Moon → First Quarter → Last Quarter
B. New Moon → First Quarter → Full Moon → Last Quarter
C. Full Moon → New Moon → First Quarter → Last Quarter
D. First Quarter → Full Moon → New Moon → Last Quarter

Q2. Artificial satellites are used for all the following purposes except:

A. Communication
B. Weather forecasting
C. Space research
D. Increasing Earth's gravity

Q3. The Moon is not visible at all on the day of:

A. Full Moon
B. Half Moon
C. New Moon
D. Crescent Moon

Q4. When the illuminated part of the Moon increases night after night, it is called:

A. Waning phase
B. Waxing phase
C. Eclipse phase
D. Dark phase

Q5. The earliest calendars were mainly based on the motion of the:

A. Earth around the Sun
B. Moon around the Earth
C. Stars in the sky
D. Planets in the solar system

Q6. Which of the following is India's first artificial satellite?

A. INSAT-1A
B. Aryabhata
C. Bhaskara-I
D. Chandrayaan-1

Q7. Why were calendars important for early humans?

A. For decoration and art
B. For calculating taxes only
C. For predicting natural disasters
D. For organizing agricultural, religious, and social activities

Q8. A solar calendar is based on:

A. The rotation of Earth on its axis
B. The revolution of Earth around the Sun
C. The revolution of Moon around the Earth
D. The rotation of Sun on its axis

Q9. Which of the following statements about polar satellites is true?

A. They remain fixed over one point
B. They orbit above the equator only
C. They pass over both poles during each revolution
D. They are used only for communication

Q10. The time taken by a satellite to complete one revolution around the Earth is called:

A. Rotational period
B. Orbital period
C. Revolution rate
D. Time of travel

Q11. When the illuminated part of the Moon decreases each night, the Moon is said to be:

A. Waxing
B. Waning
C. New
D. Crescent

Q12. The different shapes of the illuminated part of the Moon seen from Earth are called:

A. Lunar cycle
B. Phases of the Moon
C. Solar phases
D. Moon eclipse

Q13. The Moon's light is actually:

A. Produced by the Moon itself
B. Reflected light from the Earth
C. Reflected light from the Sun
D. Light produced by stars

Q14. The time taken by the Moon to complete one revolution around the Earth is approximately:

A. 24 hours
B. 7 days
C. 29.5 days
D. 365 days

Q15. An artificial satellite is:

A. A natural object revolving around the Earth
B. A man-made object revolving around the Earth or another planet
C. A star that moves around the Sun
D. A meteor moving through space

Answer Key

Short Answer Questions

Q16. State the Difference between Waxing and Waning Phases of the Moon.

Q17. Why does the illuminated portion of the Moon decrease when it appears closer to the Sun?

Q18. What is the significance of celestial objects in measuring time?

Q19. Briefly explain Lunar Calendar and Solar Calendar.

Q20. What are artificial satellites, and how do they help human activities on Earth?

Important Questions for Class 8 Science Chapter 11 PDF Download

Download the Important Questions for Class 8 Science Chapter 11 PDF to revise the chapter anytime, anywhere. 

 The PDF includes exam-oriented MCQs, short-answer, and long-answer questions based on the NCERT syllabus, making it an excellent resource for quick revision before unit tests, half-yearly, and annual examinations. It also helps students practise offline and strengthen their conceptual understanding. 

Important Questions for Class 8 Science Chapter 11 PDF Download

How to use Important Questions for Class 8 Science Chapter 11 effectively?

Practising the Important Questions for Class 8 Science Chapter 11 is an effective way to revise the chapter and improve exam performance. A systematic approach helps students understand concepts, strengthen problem-solving skills, and retain important topics for school examinations. 

• Complete the NCERT chapter first to understand concepts like the Moon's phases, calendars, and artificial satellites before solving questions.

• Practice all important questions regularly to strengthen your understanding and improve speed and accuracy.

• Attempt questions without looking at the answers to identify your strengths and areas that need more revision.

• Revise important definitions, diagrams, and key concepts after solving the questions to reinforce learning.

• Solve these questions before exams as a quick revision strategy to improve confidence and perform better in school tests.

 Downloading the Important Questions for Class 8 Science Chapter 11 PDF is a smart way to prepare for exams. It provides easy access to NCERT-based MCQs, short-answer, and long-answer questions for regular practice and quick revision. 

 By solving these questions consistently, students can strengthen their conceptual understanding, improve problem-solving skills, and perform confidently in school examinations.