Seismic Wave Travel Time Concepts

The video tutorial by Mrs. Logue explains how to interpret page 11 of the New York State science reference tables, focusing on P-wave and S-wave travel times for earthquakes. It introduces seismograms, highlights the differences between P and S waves, and guides viewers on reading the travel time chart. The tutorial includes examples of calculating travel times and distances, reverse calculations, and understanding lag time. The video concludes with a readiness check for understanding the material.

What marks the arrival of the first key wave on a seismogram?

• A gradual increase

• A small wiggle

• A flat line

• A big spike up or down

What is the term used for the time difference between the arrival of the first P-wave and the S-wave?

• Seismic gap

• Wave interval

• Lag time

• Travel time

Which type of wave can travel through solids, liquids, and gases?

• Rayleigh wave

• S-wave

• Surface wave

• P-wave

How much time does each line on the y-axis represent in the reference table?

• 10 seconds

• 20 seconds

• 30 seconds

• 40 seconds

What is the distance scale increment on the x-axis of the reference table?

• 200 kilometers

• 100 kilometers

• 300 kilometers

• 400 kilometers

How long does it take for a P-wave to travel 2,000 kilometers?

• 4 minutes

• 3 minutes

• 6 minutes

• 5 minutes

How long does it take for an S-wave to travel 1,200 kilometers?

• 3 minutes and 40 seconds

• 4 minutes and 40 seconds

• 5 minutes

• 4 minutes and 20 seconds

How far can a P-wave travel in five minutes?

• 3,000 kilometers

• 2,000 kilometers

• 2,400 kilometers

• 2,600 kilometers

How much longer does it take an S-wave to travel 1,400 kilometers compared to a P-wave?

• 1 minute

• 2 minutes and 20 seconds

• 3 minutes

• 2 minutes

What is the total time difference after the arrival of the first P-wave for an S-wave to travel 1,400 kilometers?

• 3 minutes

• 2 minutes

• 1 minute and 20 seconds

• 2 minutes and 20 seconds