>>Looks like it could be a big one on all the pacific coastlines
>>
>>http://www.bbc.co.uk/news/world-asia-pacific-12709598
>
>This is a really bad one. The quake was bad enough, then add tsunami waves 10 meters high.
>
>I learned something I didn't know driving Emily to school a few minutes ago. She said what is the highest earthquake magnitude? I told her to look up Richter scale on her iPhone. She said the site she looked at says there is no upper end. What kind of scale is that?

It's not a scale like the ones used for hurricanes or tornados. It's an actual measure of the movement, and it's called a "scale" because it's logarithmic, not straight line.

What's the upper end of the weight range of humans? There's a largest recorded weight, but no theoretical top.

Tamar