Question

why do p waves travel at a reduced velocity beyond the depth of 2900 km in the earth's interior

Answer 1

Answer: The cold weather season is the inflow of distribution from West and nort _west these low pressure systems called western distributences

Explanation:

Answer 2

ANSWER:

p waves travel at a reduced velocity beyond the depth of 2900 km in the earth's interior because of change in the composition of different zones inside the earth.  

EXPLANATION:

      p waves travel in a curved path in the interior of the earth. They are recorded along the surface of the earth upto a distance of 11,000 km from the focus of the earthquake.

     As the depth increases, the velocity of the wave decreases. This process continues only till a "depth of 2,900 km". Beyond this depth, p wave travel with reduced velocity.

   This is because earth behaves like liquids upto a depth of 2,900 km while mantle behaves like solids.