Suppose the moon emits light of its own. Would it still have phases? Justify your answer. Open Answer »
Suppose the distance between earth and sun becomes half of its present distance. What is likely to happen to life? Open Answer »
Look at above figure carefully and answer the following questions:(i) In which part of the sky would you see the full moon in the evening? (ii) In which part of the sky would you see the crescent moon in the evening? Open Answer »
The given figure shows comets without their tail. Show the tails of the comets at position A, B, and C. In which position will the tail be longest? Open Answer »
Paheli saw the moon through a glass window at 8:00 p.m. She marked the position of the-moon on the glass pane. She got up at 4 a.m. in the morning. Will the moon be visible at the same position? Open Answer »
In figure given below mark the arrows (←), (→), (↓), or (↑) to show the direction of sunlight. Open Answer »
(i) In which part of the sky would you see the full moon in the evening? (ii) In which part of the sky would you see the crescent moon in the evening? 
