How do waves move in water ?12. How are the Mercalli scale and Richter scale similar? How are they different?

Question

How do waves move in water ?12. How are the Mercalli scale and Richter scale similar? How are they different?

Answer 1

The wave is not moving the water.But the force is osculating the water  next and next. Regarding the Richter scale and Mercalli scale .

There are two different scale to measure the earthquakes. One is the famous Richter scale. You can measure the energy release at the point of focus from a distant place with the use of seismograph. The arrival time of S wave and P Wave is used to find the distance of epicenter.The maximum amount of shaking recorded in seismograph together with the distance is used to calculate the Richter scale.The Richter scale 3 when measured from a distance of 100 K/M will record a shaking of 0.1 mm.This will get increased by ten fold for each Richter scale and in will get reduced by inverse square of distance. See the chart for energy release in each Richter scale. But another use full but not in common use is the Mercalli scale. This will differ from place to place according the intensity felt by the people living in that area.No need for any measuring device.Its start from 1 people can not feel it and ends with 12 where every thing will fly off.The Richter scale is open ended scale .No upper limit for it. But the maximum recorded after the invention of that scale is 9.5 only.

Approximate TNT (Tri nitro telecom ) Yield for Seismic Energy

Richter scale

1 30 lbs

2. 1 ton

3. 29 ton

4. 1000 ton

5. 32000 ton

6. 1 million ton

7. 32 million ton

8. 1 billion ton

9. 32 billion ton

10 1 trillion ton.

Answer 2

Water waves are energy moving through the water.  The actual movement of a water molecule in a wave is a circular one.  Where it begins the circle is exactly where it ends up.

This is a good analogy:

Imagine that you are holding the end of a 20 foot rope.  Your friend is holding the other end.  The rope has some slack in it.  You give the rope a very quick up and then down motion.  You will see the energy moving down the rope toward your friend.  However, none of the rope has moved toward your friend.

The Mercalli Scale and the Richter Scale are both used to show the seismic energy released in an earthquake.  However, the Mercalli scale measures intensity by using phases describing damages.  It uses Roman Numerals and goes from I through XII.  The Richter Scale, on the other hand, is a mathematical device used to measure the magnitude with standard numbers from 1 to 10.0+.