How would this diagram change if the seismic station was farther from the earthquake? 
A. The S-waves would arrive later.
B. The P-waves would arrive later.
C. There would be a larger gap between the arrivals of the P- and S-waves.
D. All of these choices are correct.
Answer: D
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Some of the offspring of a beetle develop spots. These spots make it harder for birds to see the beetles and thus, the spotted beetles tend to survive and produce more offspring than the beetles without spots. This heritable trait is called a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is an example of a chemical change?
A. gasoline being used in the engine of a car producing exhaust B. water freezing into ice crystals C. a piece of metal expanding when heated, but returning to original size when cooled D. aftershave or perfume on your skin generating a smell E. breaking a glass window
A catastrophic earthquake is one with a magnitude over 9.0. It has strong effects over areas thousands of miles in diameter. Catastrophic earthquakes are recorded about once every
A. 20 years. B. month. C. 500 years. D. 2 years.
The process of ________ releases elastic strain during and after an earthquake
Fill in the blank(s) with correct word