Which of the following statements is/are correct? 1. Hypocenter is...

The subsurface location (focus) at which the energy of an earthquake is released is known as hypocentre. Earthquakes generally occur at depths less than about 30 km. P waves are the fastest body waves and arrive at stations before the S waves, or secondary waves. Their velocity in the crust varies between 5.0 and $7.0 \mathrm{ km} / \mathrm{s}$. Seismic waves move more slowly through a liquid than a solid. Molten areas within the Earth slow down $P$ waves and stop $S$ waves because their shearing motion cannot be transmitted through a liquid.