Why Japan has so Many Earthquakes. Japan is located along the Pacific “ring of fire”, on the edges of several continental and oceanic tectonic plates. This is an area of high seismic and volcanic activity from New Zealand, up through Japan, across to Alaska, and down the west coasts of North and South America.
When you stand on the ground and look at the stars, about 100% of the Earth’s atmosphere is above your head, so the light from stars has to pass through the turbulent air of the troposphere, where it is refracted, giving it a twinkling appearance. From an aircraft, this same thing happens with city lights.