1. The wave front of the sound wave reached the shore and echoed back.
(音波の波面が岸に到達し、反響した。)

2. The wave front of the light beam spread out in all directions.
(光線の波面が全方向に広がった。)

3. The wave front of the earthquake traveled through the ground and caused buildings to shake.
(地震の波面が地面を通り抜け、建物を揺らした。)

4. The wave front of the ocean wave crashed against the rocks, creating a loud sound.
(海の波の波面が岩にぶつかり、大きな音を響かせた。)

5. The wave front of the radio signal reached the receiver, allowing communication to occur.
(無線信号の波面が受信機に届き、通信が可能となった。)

6. Scientists studied the wave front of the tsunami to understand its speed and impact on coastal areas.
(科学者たちは津波の波面を調査し、その速度や沿岸地域への影響を理解するために研究した。)