Do tectonic plates cover most of earth but not all of it?

Distinguish between a transverse wave and a longitudinal wave.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Estimate the change in the gibbs energy and molar gibbs energy of 1.0dm3 of octane when the pressure acting on it is increased from 1.0 atm to 100 atm. the mass density of octane is 0.703 g cm−3