Answer:
1.D
2.B
3.C
4.B
Explanation:
1.Surface waves travel only through solid media. They are slower-moving than body waves but are much larger and therefore more destructive. The two types of surface waves are named Love waves and Rayleigh waves, after the scientists who identified them.
2.The fastest seismic waves are known as P waves. That “p” stands for primary. And early seismologists called them that because these waves were the first to arrive at seismometers from some distant quake. At Earth's surface, P waves travel somewhere between 5 and 8 kilometers per second (3.1 and 5 miles per second).
3.By tracking seismic waves, scientists have learned what makes up the planet's interior (figure 2). P-waves slow down at the mantle core boundary, so we know the outer core is less rigid than the mantle. S-waves disappear at the mantle core boundary, so the outer core is liquid.
4.When an earthquake occurs, it makes seismic waves, which cause the shaking we feel. ... 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.
