Activity for J parell‭

Type	On...	Excerpt	Status	Date
Answer	—	A: How to estimate current speed and direction while swimming at sea? When we dive here in Florida, we often want to know which direction the current is going. The track of your boat doesn’t help much because it is caused by a combination of wind and current. To isolate the effect of the current, try tie in one end of a string to a float and the other to a li... (more)	—	over 6 years ago