INDIAN GEOGRAPHY

Detailed explanation-1: -Seismic waves are waves that travel through or over Earth. They are usually generated by movements of the Earth’s tectonic plates (earthquakes) but may also be caused by explosions, volcanoes and landslides.

Detailed explanation-2: -A seismic wave is a wave of acoustic energy that travels through the Earth or another planetary body. It can result from an earthquake (or generally, a quake), volcanic eruption, magma movement, a large landslide, and a large man-made explosion that produces low-frequency acoustic energy.

Detailed explanation-3: -Seismic activity (from the Greek seismos, earthquake) is the frequency and severity of earthquakes in a given region. Seismology is the study of earthquakes. Earthquakes occur when rocks on opposite sides of faults, or fractures in the Earth, slip past one another (Figure S9; Kanamori, 1994).

Detailed explanation-4: -This sudden release of energy causes the seismic waves that make the ground shake. During and after the earthquake, the plates or blocks of rock start moving-and they continue to move until they get stuck again. The spot underground where the rock first breaks is called the focus, or hypocenter of the earthquake.

Detailed explanation-5: -The seismic waves travel inside the Earth in four different types which are P-waves, S-waves, Rayleigh waves and Love waves. P-waves (primary) and S-waves (secondary) are body waves which are the fastest waves and can travel inside and surface of the Earth.