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 »
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 »