We calculate the actual speed of the tsunami by measuring the water depth at a point in time when the tsunami passes by. A tsunami's ability to maintain speed is directly influenced by the depth of the water. A tsunami moves faster in deeper water and slower in shallower water. So unlike a normal wave, the driving energy of a tsunami moves through the water as opposed to on top of it. Therefore, as a tsunami moves though deep water at hundreds of miles an hour, it is barely noticeable above the waterline. A tsunami is typically no more than 3 feet (1 meter) high until it gets close to shore. Once a tsunami gets close to shore, it takes its more recognizable and deadly form.
Adult head lice can live for approximately 24 hours away from a host, according to the Centers for Disease Control. Nymphs, or young head lice, can live for only several hours away from a host. Lice eggs are less dependent on a host, and they can live for up to one week without a host. Continue Reading.
Gestation time for head lice is 10 days from the point that a female lays the eggs and the nits hatch.An adult can live for up to 30 days on its host. If bedding and other items are not properly treated, eggs can hatch and a nit can reinfect a host. add a comment.nswer by mcmario2007 (786). The gestation time for head lice is approximately ten days and the best way to get rid of the lice is to use a proper shampoo meant to exterminate head lice. add a comment.