Energy release associated with rapid movement on active faults is the cause of most earthquakes. A fault plane is the plane that represents the fracture surface of a fault. A fault trace or fault line is the intersection of a fault plane with the ground surface.
The average IQ of a teenager is 100. IQ tests take age into consideration, so the average score is always 100, regardless of a person's age.
The IQ scale is open-ended. Your IQ is 100 times your mental age divided by your actual age. Mental age is the age at which your IQ test results would be average. So let's say you're 10 years old, but your IQ test results are those of an average 12 year old. Your IQ would be 100 x 12 / 10, or 120. If you are 10 years old and your IQ is 80, your IQ test results are average for an 8 year old.