Question 6 Not complete Marked out of 1.00 Tsunamis are fast-moving waves often

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Question 6 Not complete Marked out of 1.00 Tsunamis are fast-moving waves often generated by large underwater earthquakes. In the deep ocean, their amplitude is barely noticeable, but upon reaching shore, they can rise up to the astonishing height of a six-story building. One tsunami, generated off the Aleutian islands in Alaska, had a wavelength of 732 km, and travelled a distance of 3880 km in 5.60 hours (note: this is given in decimal format, not as hours and minutes). What is the speed of the wave? Flag question m/s Check Question 7 Not complete Marked out of 1.00 P Flag question What is the period of the wave? Check

Explanation / Answer

A) Speed of wave = 3880000/(5.6*3600) = 192.46 m/s

B) frequency= speed of wave/ wavelength= 192.46/732000= 2.63*10^-4 Hz

Time period of wave= 1/frequency= 1/ (2.63*10^-4)= 3803.388 seconds

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