Final answer:
According to Mr. Ross in The Wave, the three key elements required to achieve strength are amplitude, frequency, and period.
Step-by-step explanation:
The three key elements required to achieve strength according to Mr. Ross in The Wave are:
- Amplitude: The distance between the resting position and the maximum displacement of the wave.
- Frequency: The number of waves passing by a specific point per second.
- Period: The time it takes for one wave cycle to complete.
These elements are important in understanding the characteristics and behavior of waves and play a significant role in determining their strength.