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If a very huge Earthquake occured anywhere on Earth could waves emerge to come together again on the opposite side?

It is called "antipodal focusing". See for example Antipodal focusing of seismic waves observed with the USArray. We present an analysis of the M-w = 5.3 earthquake that occurred in the Southeast ...
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23 votes
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Why are there waves in seas towards shore - even in night?

Ocean waves (and also in mediterranean type seas and larger lakes, but on a smaller scale) are generated by two processes: locally generated waves ("wind waves"), which follow the direction of the ...
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3 votes
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Are there minerals that can't scratch each other but have different hardness on Mohs scale?

The idea discussed in the paper you reference is about transferability of Mohs ordinal scale to true hardness. A mineral's ability to scratch is related to it's hardness, but only an indentation test ...
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Are there minerals that can't scratch each other but have different hardness on Mohs scale?

It may be difficult to ascertain the hardness of a mineral relative to an other mineral in a Mohs streak test if one (or both) are not homogeneous. Already a small local grain of an impurity may put ...
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3 votes

Why are there waves in seas towards shore - even in night?

Wind blows from sea to land in day and land to sea in night due to pressure and temperature difference. Not so much. This is common in the Mediterranean in summer, for example, where the area sits ...
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Why are there waves in seas towards shore - even in night?

I'm making my comment an answer. Waves are ubiquitous, except on land ;-). Waves in the open sea are a mix — a superposition — of waves in different directions.1 The dominating direction ...
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