NCERT Solutions Class 7 Science Chapter 12 Earth, Moon and, the Sun

NCERT Solutions Class 7 Science Chapter 12 Earth, Moon and the Sun, introduces students to the celestial relationship and fascinating facts about our planet, its only natural satellite—the Moon—and the life-giving star—the Sun. This NCERT Solutions Class 7 Science Chapter helps students understand how the positions and movements of these three celestial bodies affect natural phenomena like day and night, seasons, and phases of the Moon.

Our NCERT Solutions Class 7 Science Chapter 12 provides well-structured, easy-to-understand answers that align with the latest NCERT curriculum. These solutions are crafted by academic experts to make Science fun and engaging for students. They also help in building strong conceptual understanding, boosting exam confidence, and improving answer-writing skills.

1.0NCERT Solutions Class 7 Science Chapter 12 Earth, Moon and the Sun – Download PDF

Download Free NCERT Solutions for Class 7 Science Chapter 12 PDF now, prepared for students to study offline and revise effectively.

2.0Key Concepts in Chapter 12 : Earth, Moon and the Sun

1. Rotation of the Earth

• Rotation is Earth’s spinning on its axis, taking ~24 hours to complete one full turn.
• This west‑to‑east rotation makes the Sun, stars, and Moon appear to rise in the east and set in the west.
• Day and night cycle occurs because half of Earth is illuminated while the other half is in shadow.

2. Revolution of the Earth

• Revolution is Earth’s journey around the Sun in a nearly circular orbit, completed in about 365 days and 6 hours.
• The tilt of Earth’s axis (~23.5°) during revolution leads to varying intensity and duration of sunlight in different hemispheres, creating seasons.

3. Changing Night Sky & Stars

• As Earth orbits the Sun, we view different regions of space at night, so visible star patterns shift gradually over the year .
• At a fixed time each night, stars appear to rise about 4 minutes earlier day by day due to this motion.

4. Seasons & Solstices/Equinoxes

• In June, the Northern Hemisphere tilts toward the Sun, experiencing summer with longer days and more intense sunlight; December reverses this for the Southern Hemisphere.
• Solstices: Summer solstice (~June 21) is the longest day in the north; winter solstice (~Dec 22) is shortest.
• Equinoxes (~Mar 21, Sep 23) are when day and night are nearly equal everywhere .

5. The Moon – Earth’s Natural Satellite

• The Moon orbits Earth every ~27 days and lies about 384,000 km away.
• It’s non-luminous and reflects sunlight, showing changing shapes known as lunar phases.
• Its surface has many craters formed by asteroid impacts.
• Indian missions Chandrayaan‑1/2/3 have advanced our understanding, with Chandrayaan‑3’s landing near the Moon’s south pole on 23 August 2023 inaugurating India’s National Space Day.

6. Eclipses

Solar Eclipse

• Occurs when the Moon passes between Sun and Earth, blocking sunlight.
• If it covers the Sun fully — a total solar eclipse; if partially — a partial eclipse .
• Remember: never view the Sun directly — use solar filters, projection methods, or eclipse events to watch safely .

Lunar Eclipse

• Occurs when Earth comes between Sun and Moon, casting its shadow on the Moon .
• Can be total or partial, depending on how deeply the Moon enters Earth’s shadow .
• Visible from anywhere on the night side of Earth, making them more widely observable than solar eclipses .

3.0Key Features of NCERT Solutions Class 7 Science Chapter 12

• Accurate & Aligned: Solutions strictly follow NCERT content, ensuring clarity and compliance with the latest 2025–26 syllabus.
• Concise Answers: Includes Very‑Short, Short, and Long Answer formats with relevant diagrams (e.g. Earth’s tilt, eclipse geometry).
• Educational Activities: Solutions enhance classroom experiments like globe‑torch demonstrations and star observations.
• Diagram Practice: Supports drawing of phases, orbits, and alignment during eclipses to help visual learning.
• Conceptual Clarity: Explains terms like rotation, revolution, orbit, tilt, solstice, equinox, lunar phase, eclipse, etc.
• Quick Revision Points: Summaries and “Points to Remember” lists enhance last‑minute revision efficiency.