Name __________________________ Lab Section__________ EAS 1600 - INTRODUCTION TO ENVIRONMENTAL SCIENCES Exam 3 Sample A 1.A planet has a radius of 7000 Km. The planet is 65% covered by oceans which have an average depth of 5 km. The average salinity of the oceans is 350/00. What is the mass of the salt in the oceans of this planet? [5 Pts] 2.An S - Wave travels at 3 Km s-1and a P- Wave travels at 7 Km s-1. The S – Wave arrived at a seismograph 15 minutes after the P- Wave What is the distance from the seismograph to the focus of the earthquake? [10 Pts]
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Name __________________________ Lab Section__________ 3.An Earth-like planet has a radius of 10,000 Km and the average movement of its plates is 5 cm per year. [10 Pts] a.What is the period of the Wilson cycle on this planet? b.Assume that one ocean is 8000Km wide, with a ridge in the middle of the ocean. What is approximate age of the sea floor along the coasts?