UAG Unit 9 - Regents Earth Sci - Seismic Wave Check

Seismic station A is 5000 kilometers from the epicenter. What is the difference between the arrival time of the first P-wave and the arrival time of the first S-wave recorded at this station?

• 2 minutes 20 seconds 
• 6 minutes 40 seconds 
• 8 minutes 20 seconds 
• 15 minutes 00 second 

Which process prevented P-waves from arriving at seismic station B? 

• refraction
• reflection
• convection
• conduction

Only P-waves were recorded at seismic station C because P-waves travel  

• only through Earth’s interior, and S-waves travel only on Earth’s surface
• fast enough to penetrate the core, and S-waves travel too slowly
•  through iron and nickel, while S-waves cannot
• through liquids, while S-waves cannot 

Which layer is made up of iron and nickel?

• Crust
• Mantle
• Inner Core
• Lithosphere

Which wave travels fastest, always being the first detected by seismic stations?

• P-Waves
• S-Waves
• P- and S-Waves travel at the same speed
• This depends on other factors

Which kind of waves CANNOT travel through a liquid?

• P-Waves
• S-Waves
• BOTH CAN travel through liquids
• NEITHER CAN travel through liquids

Where are the P-waves located on this seismogram?

• A
• B
• C
• D

What type of wave are the BLUE waves?
(The orange circle is the core)

• P-waves
• S-waves
• A mixture of S- and P-Waves
• None of the above

Which of the following is evidence that the core has 2 layers?

• Refraction of P-waves
• Absorption of S-waves
• Refraction of S-waves
• No waves enter the core

What is the depth at point B?

• 3.4-5.6 km
• 1.5 km
• 5000 km
• 2900 km