Question

1. What kind of waves are present during an earthquake?

2. How do you calculate density?

3.What is it called when light changes direction after leaving a lens?​

Answer 1

Answer:

Ans 1 : The two main types of waves are body waves and surface waves. Body waves can travel through the earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes radiate seismic energy as both body and surface waves.

Ans 3 : : Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows.