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  2. Aftershock - Wikipedia

    en.wikipedia.org/wiki/Aftershock

    In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large earthquakes can have hundreds to thousands of instrumentally detectable aftershocks, which steadily decrease in magnitude and frequency according ...

  3. What are aftershocks and should you prep for them in NY ... - AOL

    www.aol.com/aftershocks-prep-them-ny-friday...

    Aftershocks in the 3-4.8 magnitude range can be expected on average, according to the USGS, but some aftershock sequences are more energetic than others. What we know about NY, ...

  4. Hypersonic effect - Wikipedia

    en.wikipedia.org/wiki/Hypersonic_effect

    It is a common understanding in psychoacoustics that the ear cannot respond to sounds at such high frequency via an air-conduction pathway, so one question that this research raised was: does the hypersonic effect occur via the "ordinary" route of sound travelling through the air passage in the ear, or in some other way?

  5. Sound energy - Wikipedia

    en.wikipedia.org/wiki/Sound_energy

    In physics, sound energy is a form of energy that can be heard by living things. Only those waves that have a frequency of 16 Hz to 20 kHz are audible to humans. However, this range is an average and will slightly change from individual to individual.

  6. Earthquakes happen all the time, you just can't feel them. A ...

    www.aol.com/earthquakes-happen-time-just-cant...

    About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center.Most are tiny and barely noticed by people living where they happen. But some are strong ...

  7. A midnight 4.8 earthquake followed by a cluster of ...

    www.aol.com/news/midnight-4-8-earthquake...

    An agricultural community in Imperial County experienced a 4.8 earthquake and more than 180 smaller aftershocks.

  8. Shock wave - Wikipedia

    en.wikipedia.org/wiki/Shock_wave

    The crests overtake the troughs until the leading edge of the wave forms a vertical face and spills over to form a turbulent shock (a breaker) that dissipates the wave's energy as sound and heat. Similar phenomena affect strong sound waves in gas or plasma, due to the dependence of the sound speed on temperature and pressure. Strong waves heat ...

  9. Over 20 aftershocks hit New York, NJ following 4.8 earthquake ...

    www.aol.com/4-0-aftershock-reported-following...

    A 4.0 magnitude aftershock hit 37 miles west New York City in New Jersey around 6 p.m. Friday. According to the United States Geological Survey it was felt as far away as Long Island, where there ...