Tuesday, August 21, 2012

Tsunamis

Today we discussed tsunamis, which fascinate most students. Tsunamis are caused by underwater earthquakes and they displace water. Displacement of water causes a large wave or energy to travel through the water, but it cannot be seen at the surface until the wave approaches shallow water. (Confused? Check out the diagram to the left) Because the wave is not felt in deep water, going out to sea is one option for escaping a tsunami, getting onto land with higher elevation is another option. There are places in Japan and Hawaii where fishermen went out to sea in the morning and when they returned, their villages had been washed away.

We discussed tsunamis and how countries around the globe are teaching native peoples to recognize the signs of a tsunami and setting buoys to measure if a tsunami is coming. Students decided that they were glad they didn't live somewhere where the threat of a tsunami is imminent... well except if the Canary Islands fall into the sea.

Most people are aware of the large tsunami that hit Japan last spring and the damage it caused to their coasts and towns. We discussed the damages and how powerful a tsunami can be. An interesting assortment of before and after tsunami pictures from Japan can be found here

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Computer Lab Etiquette

You are in the computer lab to do work for this class. If you are not doing work, then we will have problems.

Do not pack up early. Work until the bell or until MsJ says.

SAVE OFTEN. And if you save to a key, also save it to your number. If you lose it, you will have to do it again.

If MsJ asks for your attention, stop what you are doing and listen to what she has to say.

You may watch videos about your organism through reliable websites.

You may listen to music through the computer if you have your own headphones. Rule1 MsJ cannot hear it. You get one warning. Rule2 Turn it on and listen – no million clicks and constant changing. Take both ear phones out when MsJ is talking.