Study the graph below. at what depth does the thermocline begin? a line graph relating ocean depth to water temperature. at 0 meters, temperature is approximately 27°c. at 100 meters, temperature is approximately 24°c. at 200 meters, temperature is approximately 11°c. at 300 meters, temperature is approximately 8°c.

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano