Answer for the Puzzle

Winners:

1.     Ananda S D (4^th SEM BSc)

2.     Nagendra N (4^th SEM BSc)

3.     Malathi (4^th SEM BSc)

Question

 1.    Is it possible to navigate on the Moon using a compass?
2.    When flying, many insects make a sound. How is the sound produced?3.    When flying, which insect beats its wings at a faster rate – a housefly or a mosquito? How can you determine this?

Answers:1.     No. Unlike the earth, the moon has no global magnetic field.
2.     By vibrating their wings. In flight, insects beat their wings between 4 and 1000 beats per second. The beating produce waves of compressed and rarified air, which we interpret as sound.
3.     The mosquito- it makes a higher sound when flying. Insects such as mosquitoes and midges may beat their wings up to 1000 beats per second. These produce a high- pitched sound. Houseflies beat their wings at 190 beats per second which produce a lower pitch. Butterflies are so low (about 4 beats per second) that the sound they produce is inaudible to humans.