# CHILD DEVELOPMENT PEDAGOGY

## GROWTH DEVELOPMENT CHILD

### SUMMATIVE ASSESSMENT

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
These seismic waves travel through BOTH solids and liquids.
 A P waves B S waves C Both P and S waves D Neither P nor S waves
Explanation:

Detailed explanation-1: -In a P wave, the rock particles are alternately squished together and pulled apart (called compressions and dilatations), so P waves are also called compressional waves . These waves can travel through solids, liquids, and gases.

Detailed explanation-2: -P-wave and S-wave paths through the earth. Scientists discovered that Earthâ€™s outer core is liquid by observing seismic waves. P waves travel through solid and liquid, but S waves do not travel through liquid.

Detailed explanation-3: -There are two types of body waves: P-waves travel fastest and through solids, liquids, and gases; S-waves only travel through solids.

Detailed explanation-4: -P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.

There is 1 question to complete.