CBSE Class 8 Science Revision Notes Chapter 17

Class 8 Science Chapter 17 Notes

CBSE Class 8 Science Revision Notes Chapter 17 – Stars and The Solar System

Chapter 17 of Class 8 Science curriculum is about stars and the solar system. Students will learn about different planets in the solar system, celestial objects such as the moon and stars, constellations such as Orion, the Sun, asteroids, meteors, different planets, comets, and artificial satellites in Chapter 17 of the Science textbook.

The concepts discussed in the Chapter 17 Revision Notes  Class 8 Science are given below:

  • Stars and the Solar System
  • The Moon
  • The Stars
  • Constellations
  • The Solar System
  • Some Other Members of the Solar System

Stars are celestial bodies that have their own heat and light. The sun is a star as well. Because it is closer to Earth, it appears larger than other stars. The solar system is made up of the sun, eight planets, satellites, and a few other celestial bodies known as asteroids and meteoroids. Asteroids are small rock and metal planets that orbit the Sun, most of which are located between Mars and Jupiter. When the Earth passes through the comet’s tail, swarms of meteors are seen, which is known as a meteor shower.

Extramarks offers Class 8 Science Chapter 17 Stars and the Solar System Revision Notes. These revision notes help students gain conceptual strength by explaining the entire chapter in a systematic manner. Students can study the topics and concepts with interest by utilising these notes provided by Extramarks. Class 8 Science Chapter 17 contains important information which will help students improve their exam scores.

These notes were created by subject matter experts following current CBSE standards and revised NCERT textbooks. As a result, these revision notes serve as the best reference guide for students, allowing them to improve their preparation and achieve the best results. The Extramarks revision notes are accessible anywhere and anytime from the website. For a quick review of the chapter and to improve their test scores, students can use these simple notes.

Revision Notes for CBSE Class 8 Science Chapter 17

Access Class 8 Science Chapter 17 – Stars and the Solar System in 30 Minutes

FAQs (Frequently Asked Questions)

In addition to planets, there are numerous additional celestial bodies that orbit the sun. The list is as follows:

  • Asteroids: Asteroids are small objects that orbit the Sun and are found between the orbits of Mars and Jupiter. These asteroids can only be seen with large telescopes.
  • Comets: Comets are bodies that have a small head and a tail. As these comets approach the sun, their tails continue to grow. The comet’s tail is either opposite or away from the sun.
  • Meteors: Occasionally, small objects enter the Earth’s atmosphere. These are also known as meteors or shooting stars.

A constellation is a collection of stars that has a recognisable shape. Common constellations include the following:

  • Ursa Major- it can be visible during the summer. The Big Dipper, Saptarishi, and the Great Bear are other names for it. This constellation contains seven prominent stars. It appears to be a large ladle.
  • Orion- During the winter, this constellation can be seen in the late evenings. Hunter is another name for this constellation. This constellation contains approximately 7-8 bright stars. Three stars form the hunter’s belt, and the other four stars form the quadrilateral.

Each distinct solar system is made up of the Sun and the celestial planets that orbit it. The solar system includes meteors, asteroids, and comets. These heavenly bodies rotate around the Sun due to their gravitational attraction to it. There are eight planets that orbit the centre Sun in our solar system.

Stars are celestial objects that emit light of their own. The sun is a star as well. These stars are frequently arranged in the shape of constellations such as Orion, Ursa Major, Cassiopeia, and others. It is worth noting that all the stars appear to revolve around the pole star. Furthermore, Sirius, the brightest star in the sky, is located near the Orion constellation.

The Sun generates its own light and gases through the fusion process. This is why it is referred to as a star. The Sun is the central point of any solar system, around which planets revolve. In our solar system, the Sun is nearly 150 million kilometres away from the Earth. Alpha Centauri is the next closest star. It is approximately 4.37 lightyears away from Earth.

Class 8 Chapter 17 Science is concerned with space and the various stars that make up the solar system. Luminous and non-luminous objects, planets, moon phases, the rotation of the earth along its axis and its revolution around the sun, and the formation of various constellations are all discussed.

Other than planets, the solar system includes the following objects:

Stars: Stars are celestial bodies composed of gases; they are enormous in size and have extremely high temperatures.

Asteroid: An asteroid is a small, rocky object that orbits the sun.