Question 39
Ecosystem and Ecological FactorsWhich of the following instruments is used to measure the speed of a stream?
- A.Simple float
- B.Secchi disc
- C.Quadrat frame
- D.Rain gauge
Show the answer and explanation
Answer: A (Simple float)
Explanation
A float is timed as it travels a known distance downstream, giving the speed of the water; a Secchi disc measures turbidity.