An Earthquake Emits Both P-Waves and S-Waves That Travel at Different

question 25

Multiple Choice

An earthquake emits both P-waves and S-waves that travel at different speeds through the Earth.A P-wave travels at 8 000 m/s and an S-wave at 4 000 m/s.If P-waves are received at a seismic station 30.0 s before an S-wave arrives,how far is the station from the earthquake center?

• A)2 420 km
• B)1 210 km
• C)240 km
• D)120 km

---

Definitions:

Technological Improvement

Advances in technology that enhance efficiency, productivity, or capabilities in production or services.

Chip Dip

A variety of sauces or seasonings into which chips are dipped to enhance their flavor.

Substitute Goods

Products or services that can serve as replacements for each other; when the price of one increases, the demand for the alternative typically increases.

Birth Rate

The number of live births per thousand people in a population over a given period of time.