Problem 4. Explain to high school level students aboutstreamlines, streaklines, and pathlines. Please explain byinserting a figure if necessary.
å•題4.æµç·šã€æµè„ˆç·šã€æµè·¡ç·šã«ã¤ã„ã¦é«˜æ ¡ç”Ÿã«ã‚ã‹ã‚‹ã‚ˆã†ã«èª¬æ˜Žã—ãªã•ã„。必è¦ã«å¿œã˜ã¦æŒ¿çµµ(Figure)を入れã¦èª¬æ˜Žã—ãªã•ã„。