17. Stars And The Solar System Class 8 Science [LATEST] Solutions Text Book Exercise in English - CBSE Study
NCERT Solutions for Class 8 Science are carefully prepared according to the latest CBSE syllabus and NCERT textbooks to help students understand every concept clearly. These solutions cover all important 17. Stars And The Solar System with detailed explanations and step-by-step answers for better exam preparation. Each Text Book Exercise is explained in simple language so that students can easily grasp the fundamentals and improve their academic performance. The study material is designed to support daily homework, revision practice, and final exam preparation for Class 8 students. With accurate answers, concept clarity, and structured content, these NCERT solutions help learners build confidence and score higher marks in their examinations. Whether you are revising a specific topic or preparing an entire chapter, this resource provides reliable and syllabus-based guidance for complete success in Science.
Class 8 English Medium Science All Chapters:
17. Stars And The Solar System
3. Text Book Exercise
Exercise - Question:
Que: Draw sketches to show the relative positions of prominent stars in
(a) Ursa Major and
(b) Orion
Ans:
(i) Ursa Major
(ii) Orion
Que: Name two objects other than planets which are members of the solar system.
Ans: Comets and asteroids.
Que: Explain how you can locate the Pole Star with the help of Ursa Major.
Ans: Pole star can be located with the help of two stars at the end of Ursa Major. Imagine a straight line passing through these stars. Extend the imaginary line in North direction. This line is about five times the distance between two stars. A star is seen in this direction which is called Pole star.
Que: Do all the stars in the sky move? Explain.
Ans: No, all the stars do not move in the sky. Due to the rotation of the Earth on its own axis stars seem to move in the sky.
Que: Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth?
Ans: The stars are very far away from the Earth and it is not convenient to express such distances in kilo¬metres. Thus, such large distances are expressed in unit known as light year.
If we say that a star is eight light years away from Earth, it means that the light from star will reach the Earth in eight years.
Que: The radius of Jupiter is 11 times the radius of the Earth. Calculate the ratio of the volumes of Jupiter and the Earth. How many Earths can Jupiter accomodate?
Ans: Let the radius of Earth be r units.
Que: Boojho made the following sketch (Fig. 17.6) of the solar system. Is the sketch correct or not, correct it.
Ans: No, the sketch made by Boojho is not correct. The correct sketch is given below:
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