CHAPTER 1 The earth in our solar system

Q1. Define the following terms celestial bodies, stars, constellations, planets, solar system, orbit, satellite, asteroids, meteoroids, galaxy, universe

Q2. What is full moon and new moon?

Q3. What is pole star? Explain with the help of diagrams.

Q4. What is geoid?

Q5. What does a word planet mean?

Q6. Give an account on moon?

Q7. Give a detailed account of solar system?

Q8. Why do we see one side of the moon always?

Q9. Why is the earth called a unique planet?

Q10. Fill in the blanks:-

          1. Our solar system is a part of________galaxy.

          2. The brightest star in the saptarishi is________.

          3. The word planet is derived from greek word________.

          4. The planet having rings around it is _______.

          5. Planets which rotate from west to east is______.

          6. Nearest planet to sun is________.

          7. Earth’s twin planet is _________.

          8. Humans who study the celestial bodies are called_______.

          9. The first man to step on moon _______.

         10.Sun light takes_____minutes to reach earth.

Q11. Why can’t moon support any form of life?