1. which type of wave vibrates both side to side and up and down?
2. which type of wave is the first to arrive during an earthquake?
3. which type of wave may make the ground roll?

How does the slope of the land affects the speed of lava flow

Which are results of technological advances? increased people's exposure to new ideas created a global culture valued by people around the world brought harmony to diverse groups of people reduced the number of people living in rural areas

An earthquake’s epicenter can be determined from arrival time data recorded on a(