Two separate systems used to measure earthquakes are important for accuracy. More than one system to measure gives scientists an accurate measurement of an earthquakes strength.
because of moving of tectonic plates
sometimes earths nature hassome chemicals that form tsunamis earthquakes and more that are not useful to humans cuz its actually hurtful to humans.
Earthquakes don't really have a purpose; they just happen. "Purpose" implies that the said process can be useful. Rain also occurs naturally, but we use it to cultivate fruits and vegetables. You could say that is its "purpose." Earthquakes, on the other hand, aren't useful to us at all. They can cause massive damage and the kinetic energy involved cannot be harnessed.
A barometer is an instrument used to measure atmospheric pressure. It can measure the pressure exerted by the atmosphere by using water, air, or mercury. Pressure tendency can forecast short term changes in the weather. Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems, and frontal boundaries.
Sulfur melts at a much lower temperature than sand. That might be useful. Also, there are solvents which will dissolve sulfur but not silicon dioxide. Finally, there's always the magnifying glass and tweezers method.
They're not.
Whenever the data covers a very large range of values a log scale if very useful. Earthquakes and hearing are common examples.
how useful are target systems in problem solving process
how useful are target systems in problem solving process
because of moving of tectonic plates
APR is the most useful measure of interest rate.
Nitrogen is an element, it does not separate smaller than nitrogen atoms, unless you consider subatomic particles to be useful,
iy's low melting point is useful in atomatic sprinkler systems
As a basis of comparison to a known standard. This helps in better understanding the nature of earthquakes over a long period of time.
the most useful measure of fertility are cohort measures.
geologic maps
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