Question

which statement best describes the relationship between the travel times of seismic waves from an earthquakes focus to a seismic station?
p - waves travel slower than s - waves and p - waves reach the station first
p - waves travel slower than s - waves and p - waves reach the station second
p - waves travel faster than s - waves and p - waves reach the station first
p - waves travel faster than s - waves and p - waves reach the station second
if an earthquake occurs underwater, what other natural disaster is likely to occur?
tornado
tsunami
fire
second earthquake

Explanation:

• First question: P - waves (primary waves) are compressional waves and travel faster than S - waves (secondary waves). Since they are faster, they reach the seismic station first.
• Second question: When an earthquake occurs underwater (especially a large - magnitude one), it can displace a large volume of water. This displacement can generate a tsunami, which is a series of large ocean waves.

Answer:

• First question: P - waves travel faster than S - waves and P - waves reach the station first.
• Second question: Tsunami.