Grade and/or Subject: Grade 5 Science, Physical Science, Earth Science, Elective—Oceanography, Grades 5 and 8 Math - Number Sense Description:   Use information on tides and winds to predict the location of a missing cargo container. Learn to interpret sonar images and use this information to locate the missing container. Extend your learning to include the transmission of energy through sound waves, the impact of state of matter on speed, and how ocean depth can be calculated through a knowledge of the time for a reflected sound wave to return and the speed of sound in seawater. Test your knowledge through a 5-item quiz. Use decimals and whole numbers to calculate ocean depth. Virginia Standards of Learning:   Grade 5 Science (5.1, 5.2, 5.6) Grade 5 Math (5.1, 5.3, 5.4,) Physical Science (PS.1, PS.8) Grade 8 Math (8.3) Earth Science (ES.1, ES.2, ES.3, ES.11) Elective—Oceanography NCTM Standards:   Select appropriate methods and tools for computing with whole numbers and fractions. NSE Standards:   Science as inquiry; sound energy and energy transfer; structure of the Earth's system; science and technology; use of mathematics in science. Materials:   Computer with Internet Access