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Important Questions and Answers for Class 8 Science Chapter 11 Keeping Time With The Skies 2025-26

Q: 1. What are the most important questions from Class 8 Science Chapter 11 Keeping Time With The Skies for exam preparation?

The most important questions include MCQs on time measurement, short answers on traditional methods, and long answers about the Sun and Moon's positions in timekeeping. Focus on: Explaining sundials and water clocksDescribing celestial movementsGiving examples from NCERT Class 8 Science Chapter 11 question answer

Q: 2. How should I answer long questions from Keeping Time With The Skies to score full marks?

Write long answers using CBSE step marking. Start with a direct definition, explain the process, and draw a neat diagram if needed. Always highlight marking keywords like “revolution,” “rotation,” and “shadow.” Organise your answer as: Introduction sentenceMain explanationExample or diagram

Q: 3. Where can I get Keeping Time With The Skies important questions and answers as a PDF?

You can download a Class 8 Science Chapter 11 question answer PDF covering important questions, answers, and diagrams from Vedantu’s resources. Look for the PDF link under the "Download" or "Printable" section of the important questions page for easy offline revision.

Q: 4. What are some effective ways to practice Keeping Time With The Skies MCQs and worksheets?

Practice Keeping Time With The Skies class 8 MCQ by timing yourself on sets of 10–15 MCQs using chapter worksheets. Check your answers with the provided solutions. Repeat with new worksheets to cover all major subtopics and improve recall for exam day.

Q: 5. Which subtopics in Keeping Time With The Skies have the highest exam weightage?

Subtopics with highest exam weightage are: Principles and working of sundialsMoon phases and timekeepingComparison of old and modern clocksRelation between Earth's movement and clocksRevise these first for better scoring.

Keeping Time With The Skies Class 8 Question Answer with Stepwise Solutions

Important Questions Class 8 Science Chapter 11 Keeping Time With The Skies covers all major exam topics in a simple way. Here, you’ll find keeping time with the skies class 8 question answer sets made specially for Class 8 Science students. This chapter helps you understand how people measure time using the sky and its events.

Get chapter notes, keeping time with the skies extra questions and answers, and exam-focused problems. Each answer follows the latest CBSE patterns and includes keywords to help you score well. You can also find MCQs and worksheet-style questions for extra practice and revision.

Vedantu’s Important Questions with Answers help you review key ideas quickly. Use them to practice for tests or clear doubts. Download the free Important Questions PDF below and start preparing now.

Keeping Time With The Skies Class 8 Question Answer with Stepwise Solutions

1. Multiple choice questions.

Q1. What is the main reason for the different phases of the Moon as seen from Earth?

(a) The Earth’s rotation
(b) The Moon’s changing distance from Earth
(c) The relative positions of the Sun, Earth, and Moon
(d) The Moon’s shadow on the Earth

Answer: (c) The relative positions of the Sun, Earth, and Moon.

Q2. Which calendar adds an extra day every four years to synchronize with the Earth's revolution around the Sun?

(a) Lunar calendar
(b) Solar calendar
(c) Luni-solar calendar
(d) Sidereal calendar

Answer: (b) Solar calendar.

Q3. What is the period called when the visible part of the Moon increases each night?

(a) Waning
(b) Waxing
(c) Eclipse
(d) Solar phase

Answer: (b) Waxing.

Q4. Which of the following is not an application of artificial satellites?

(a) Weather monitoring
(b) Growing plants
(c) Navigation
(d) Communication

Answer: (b) Growing plants.

2. Very Short Answer (VSA).

Q1. What is a lunar eclipse?

Answer: A lunar eclipse occurs when the Earth comes between the Sun and the Moon, and the Earth’s shadow falls on the Moon, blocking sunlight from reaching it.

Q2. Which calendar is used for official government purposes in India besides the Gregorian calendar?

Answer: The Indian National Calendar, also called Saka Calendar, is officially used in India along with the Gregorian calendar.

Q3. Name one ISRO satellite used for mapping and disaster management in India.

Answer: Cartosat satellites are used for mapping, planning cities, and managing disasters in India.

Q4. Define a 'mean solar day'.

Answer: A mean solar day is the average time the Sun takes to return to its highest point in the sky, which is 24 hours.

Q5. What is the unit of time based on the cycle of the Moon's phases?

Answer: The unit of time based on the Moon’s phases is a ‘month’ (about 29.5 days).

3. Short Answer Questions.

Q1. Explain the difference between lunar, solar, and luni-solar calendars.

Answer: Lunar calendars follow Moon phases, resulting in a year of about 354 days. Solar calendars track Earth's revolution around the Sun, giving a year of around 365 days. Luni-solar calendars use Moon months but add extra months to match the solar year and seasons.

Q2. Why do Indian festivals like Eid and Diwali fall on different dates each year in the Gregorian calendar?

Answer: Most Indian festivals are fixed as per lunar or luni-solar calendars, which do not always match the Gregorian solar calendar. The difference in the number of days makes festival dates shift every year in the Gregorian calendar.

Q3. Describe how the position of the Moon in the sky changes each day.

Answer: Each day, the Moon rises about 50 minutes later than the previous day. Its position and phase shift because the Moon moves along its orbit around Earth as Earth rotates, leading to changing appearance and position.

Q4. How do shadows help in measuring a day?

Answer: By observing the length of a stick’s shadow, which is shortest when the Sun is highest, we can identify solar noon. The interval between two successive shortest shadows measures one day, which is about 24 hours.

4. True or False Questions.

Q1. We can only see that part of the Moon which reflects sunlight toward us.

Answer: True

Q2. Artificial satellites help in weather monitoring and disaster management.

Answer: True

Q3. The Moon can only be seen at night.

Answer: False

Q4. Calendar months always match the Moon cycle.

Answer: False

3. Fill in the Blanks Questions.

Q1. The Indian National Calendar begins in the month of __________.

Answer: Chaitra

Q2. The period when the bright part of the Moon increases is called __________.

Answer: waxing

Q3. The changing shapes of the bright Moon as seen from Earth are called __________ of the Moon.

Answer: phases

Q4. An extra month added in luni-solar calendars after 2–3 years is called __________.

Answer: Adhika Maasa

Benefits of Understanding Natural Timekeeping: Class 8 Application

Learning about keeping time with the skies class 8 question answer helps students grasp how days, months, and years are measured. Building this base deepens understanding of calendars, lunar cycles, and why festivals shift each year, supporting science and daily life skills.

Explore class 8 science chapter 11 keeping time with the skies notes with simple explanations and diagrams. These extra questions and answers clarify differences between lunar, solar, and luni-solar calendars, using real examples from Indian festivals and daily experiences.

Practice with keeping time with the skies extra questions and answers and keeping time with the skies class 8 worksheet. Strengthen concepts and prepare easily for exams and real-life questions about time, moon phases, artificial satellites, and how calendars adapt to nature’s rhythms.

FAQs on Important Questions and Answers for Class 8 Science Chapter 11 Keeping Time With The Skies 2025-26

1. What are the most important questions from Class 8 Science Chapter 11 Keeping Time With The Skies for exam preparation?

The most important questions include MCQs on time measurement, short answers on traditional methods, and long answers about the Sun and Moon's positions in timekeeping. Focus on:

Explaining sundials and water clocks
Describing celestial movements
Giving examples from NCERT Class 8 Science Chapter 11 question answer

2. How should I answer long questions from Keeping Time With The Skies to score full marks?

Write long answers using CBSE step marking. Start with a direct definition, explain the process, and draw a neat diagram if needed. Always highlight marking keywords like “revolution,” “rotation,” and “shadow.” Organise your answer as:

Introduction sentence
Main explanation
Example or diagram

3. Where can I get Keeping Time With The Skies important questions and answers as a PDF?

You can download a Class 8 Science Chapter 11 question answer PDF covering important questions, answers, and diagrams from Vedantu’s resources. Look for the PDF link under the "Download" or "Printable" section of the important questions page for easy offline revision.

4. What are some effective ways to practice Keeping Time With The Skies MCQs and worksheets?

Practice Keeping Time With The Skies class 8 MCQ by timing yourself on sets of 10–15 MCQs using chapter worksheets. Check your answers with the provided solutions. Repeat with new worksheets to cover all major subtopics and improve recall for exam day.

5. Which subtopics in Keeping Time With The Skies have the highest exam weightage?

Subtopics with highest exam weightage are:

Principles and working of sundials
Moon phases and timekeeping
Comparison of old and modern clocks
Relation between Earth's movement and clocks

Revise these first for better scoring.

6. How do diagrams help in scoring marks for Keeping Time With The Skies important questions?

Clear, labelled diagrams like sundials or phases of the Moon impress examiners and earn quick step marks. Always draw neatly, label parts, and use a ruler where possible. Diagrams often support or replace explanations, especially in Keeping Time With The Skies class 8 worksheet and long answer formats.

7. What common mistakes should I avoid while writing important answers from this chapter?

Students often skip marking keywords, forget diagrams, or mix up definitions in Keeping Time With The Skies class 8 question answer. Avoid these by:

Re-reading the question for command words
Underlining key terms
Adding neat diagrams where needed