Why are p waves called push up waves

The P wave can move through solid rock and fluids, like water or the liquid layers of the earth. It pushes and pulls the rock it moves through just like sound waves push and pull the air. ... P waves are also known as compressional waves, because of the pushing and pulling they do.

P waves are called push-pull waves because they move along a horizontal path. As they do this, they expand and contract material.

Nah i’m goody that’s a good question tho

You not be doing this in a quiz. if you actually studied your work you would know the answer. the answer though is that they would use gdp per capita because it measures a smaller portion (person). this could show individual growth per person in the country.