Q1. Fill in the blanks.
i. The North Star indicates the ___________direction.
ii. The sun is in the _________of the solar system.
iii. We can see the full moon only once in about a __________ time.
iv. Full moon night is also known as ________________.
v. Ursa Major or Big Bear is a _________________.
vi. ____________was a famous astronomer of ancient India.
i. All the planets move around the sun in an elongated path. _______
ii. It is huge and made up of extremely hot liquids. _________
iii. The word ‘planet’ comes from the Greek word “Planetai” which means ‘wanderers’. __________
iv. The moon is in the centre of the solar system. __________
v. Till recently (August 2006), Pluto was also considered a planet. ________
vi. Word geography is made of two Greek words, ‘ge’ meaning’ ‘earth’ and ‘graphia’ meaning ‘writing’. __________
Q3. How long does it take to go from a new moon to a full moon?
Q4. Name few dwarf planets.
Q5. Which is the third nearest planet to the sun?
Q6. Which is the closest celestial body to our earth?
Q7. Name the natural satellite of the earth?
Q8. Where are the most asteroids found?
Q9. How many times can we see full moon in a month time?
Q10. How long does it take for the moon to complete one revolution?
Q11. What is a geoid?
Q12. Why do the stars look so small in the sky?
Q13. From where does Earth receive heat and light?
Q14. What is the speed of light?
Q15. How much time light takes to reach the earth?
Q16. Who are called astronomers?
Q17. What cast shadow on the moon?
Q18. What is a Pole Star?
Q19. What is a galaxy?
Q20. How can we locate the position of the pole star?