Question

(e) Explain the types of seismic waves
(f) Explain the types of volcanoes
the basis of periodicity of eruption
with examples.​

Answer 1

Answer:

e) Seismic waves are fundamentally of two types, compressional, longitudinal waves or shear, transverse waves. Through the body of the Earth these are called P-waves (for primary because they are fastest) and S-waves (for secondary since they are slower).

f) On the basis of periodicity of eruption, volcanoes are classified into three types: (i) active volcanoes, (ii) dormant volcanoes, and (iii) extinct volcanoes. (i) Active Volcanoes: ... The Stromboli volcano emits so much fire and incandescent gases that it is known as 'the Light House of the Mediterranean Sea'.

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Answer 2

Explanation:

the types of seismic waves are as follows :1.primary waves the seismic waves that reach the earth first immediately after the energy is released in the interior are called as primary waves 2. secondary waves the Waves that reach the surface of the earth after the primary waves are called as secondary waves 3. surface waves the Waves that are generated after the primary waves and secondary waves are called as surface waves.