Wednesday, December 26, 2007

The power of the Moon
Many animals use the Moon as a clock or compass. Night-flying birds, such as migrating thrushes, time their journeys to navigate by moonlight.

The breeding habits of many sea creatures are guided by the Moon. This is because the Moon and Sun cause the movement of the tides. On May and June nights the tides can be exceptionally high, and horseshoe crabs choose this time to lay their eggs in nests in the sand. High tides give the buried eggs some protection from predators.

Longer Days
Days are getting longer, due to the pull of the Moon and the Sun. As the gravity of these two heavenly bodies forces the tides up and down around the Earth, the movement drags on the spinning Earth, slowing it down. Less than two thousandths of a second is lost every 100 years, but in 200 million years time an Earth day will be 25 hours long.

Tag :moon power
Tag :longer day