Question

Which of the following statements is/are correct about Earthquake Waves. *
1 point
1. The velocity of waves changes as they travel through materials with different densities.
2. Earthquake Waves reflect or refract when coming across materials with different densities​

Answer 1

Answer:

Seismic waves are waves of energy that travel through the Earth's layers, and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy. Many other natural and anthropogenic sources create low-amplitude waves commonly referred to as ambient vibrations. Seismic waves are studied by geophysicists called seismologists. Seismic wave fields are recorded by a seismometer, hydrophone (in water), or accelerometer.