CBSE Class 7 Science Notes Chapter 12, Download PDF

CBSE Class 7 Science Notes Chapter 12 helps students understand the basic ideas about the Earth, the Moon, and the Sun. This chapter explains how these three bodies are connected. It also explains how day and night happen, how seasons change, and how the Moon looks different on different days. The concepts are simple and useful in daily life.

Here, we’ll present CBSE Class 7 Science Notes Chapter 12 in a clear and structured way. 

CBSE Class 7 Science Notes Chapter 12 Notes PDF

These notes are useful for quick revision. They cover all important topics in a simple format. Students can use them before exams to revise key points easily. CBSE Class 7 Science Notes Chapter 12 provides clarity and supports better understanding.

Earth, Moon, and the Sun Class 6 Notes PDF

Introduction to the Earth, Moon, and the Sun

CBSE Class 7 Science Notes Chapter 12 begins with an introduction to the three important bodies in our solar system. The Earth is the planet where we live. The Moon is the natural satellite of the Earth. The Sun is a star and the main source of energy for all living beings.

The Sun gives us heat and light. The Earth moves around the Sun. The Moon moves around the Earth. These movements cause many natural events that we see every day.

Students who have studied the Earth, Moon, and the Sun class 6 notes will find this chapter easier. It builds on basic ideas and explains them in more detail.

The Sun and Its Importance

The Sun is very important for life on Earth. It provides energy in the form of heat and light. Without the Sun, life cannot exist.

CBSE Class 7 Science Notes Chapter 12 explains that the Sun is at the center of the solar system. All planets move around it. The Sun appears small from Earth, but it is actually very large.

The energy from the Sun helps plants to make food. It also controls the weather and climate of Earth.

The Earth and Its Movements

The Earth shows two main types of movements. These movements are important topics in CBSE Class 7 Science Notes Chapter 12.

Rotation of the Earth

Rotation means spinning on its axis. The Earth takes about 24 hours to complete one rotation.

• Rotation causes day and night

• When one part of the Earth faces the Sun, it is day

• The other part faces away and has night

This concept is also explained in Earth, Moon, and the Sun notes, but here it is described with more clarity.

Revolution of the Earth

Revolution means moving around the Sun. The Earth takes about 365 days to complete one revolution.

• Revolution causes seasons

• It also defines a year

CBSE Class 7 Science Notes Chapter 12 explains how the tilt of the Earth’s axis also affects seasons.

The Moon and Its Features

The Moon is the closest celestial body to Earth. It does not have its own light. It reflects sunlight.

CBSE Class 7 Science Notes Chapter 12 explains that the Moon takes about 27 days to revolve around the Earth. It also rotates at the same time. Because of this, we always see the same side of the Moon.

Students who read Earth, Moon, and the Sun class 6 science notes already know that the Moon has no air and no water. This chapter adds more details.

Phases of the Moon

The Moon does not look the same every day. Its shape changes. These changes are called phases of the Moon.

CBSE Class 7 Science Notes Chapter 12 explains the main phases:

• New Moon

• Crescent Moon

• First Quarter

• Gibbous Moon

• Full Moon

These phases happen because of the position of the Moon, Earth, and the Sun.

On a new moon day, the Moon is not visible. On a full moon day, the Moon appears fully bright.

Why Do We See Different Shapes of the Moon?

CBSE Class 7 Science Notes Chapter 12 explains that the Moon reflects sunlight. The part of the Moon that faces the Sun is always bright. But we can see only a part of it from Earth.

As the Moon moves around the Earth, the visible part changes. This creates different shapes.

This concept is also related to ideas from CBSE Class 6 Science Notes Chapter 11 Earth, Moon, and the Sun, but here it is explained in a more detailed way.

Eclipses

An eclipse happens when one object blocks the light of another.

CBSE Class 7 Science Notes Chapter 12 explains two types of eclipses:

Solar Eclipse

A solar eclipse happens when the Moon comes between the Earth and the Sun.

• The Moon blocks sunlight

• A shadow is formed on Earth

Lunar Eclipse

A lunar eclipse happens when the Earth comes between the Sun and the Moon.

• The Earth blocks sunlight

• The Moon appears dark

These events do not happen every month because the orbits are slightly tilted.

Constellations and Stars

The chapter also introduces stars and constellations. Stars are large bodies that produce their own light.

Constellations are groups of stars that form patterns. These patterns help in identifying stars.

CBSE Class 7 Science Notes Chapter 12 explains that stars appear to move from east to west. This is due to the rotation of the Earth.

The Pole Star

The Pole Star is an important star. It appears to be fixed in the sky.

CBSE Class 7 Science Notes Chapter 12 explains that it helps in finding direction. It is located in the north direction.

Travelers and sailors have used the Pole Star for navigation.

Artificial Satellites

The chapter also introduces artificial satellites. These are man-made objects placed in space.

They move around the Earth and are used for many purposes:

• Communication

• Weather forecasting

• Navigation

CBSE Class 7 Science Notes Chapter 12 explains their importance in modern life.

Difference Between Stars and Planets

CBSE Class 7 Science Notes Chapter 12 explains the difference between stars and planets in simple terms:

This helps students understand basic astronomy.

Importance of Studying This Chapter

CBSE Class 7 Science Notes Chapter 12 is important for building basic knowledge about space. It helps students understand natural events.

It also helps in connecting daily observations with scientific explanations. Students can relate day and night, seasons, and moon phases with real-life examples.

Quick Revision Points

CBSE Class 7 Science Notes Chapter 12 can be revised quickly using these points:

• The Sun is the main source of energy

• The Earth rotates and revolves

• Rotation causes day and night

• Revolution causes seasons

• The Moon reflects sunlight

• The Moon shows different phases

• Eclipses happen due to shadows

• Stars and constellations help in navigation

CBSE Class 7 Science Notes Chapter 12 explains the relationship between the Earth, the Moon, and the Sun in a simple way. It builds a strong base for future learning in science.

The chapter connects basic ideas with real-world observations. It helps students understand how our planet works in space. By studying CBSE Class 7 Science Notes Chapter 12, students can develop clear concepts and improve their understanding of the universe.

This topic is not only important for exams but also for general knowledge. It makes students curious about space and encourages further learning.