Acadia National Park - Floating Classroom: Water Sampler

The video tutorial explains the process of collecting water samples from specific depths in a lake to measure temperature and dissolved oxygen levels. It emphasizes the importance of avoiding contamination from other depths. The tutorial describes the use of a water sampler, which functions like a mousetrap, and details the procedure of deploying it using a brass messenger to ensure accurate sampling.

Why is it important to collect water samples from specific depths in a lake?

• To ensure the sample is free from surface debris

• To measure the pH level accurately

• To avoid contamination from other depths

• To collect more water

What is the water sampler compared to in the video?

• A water pump

• A water mousetrap

• A fishing net

• A thermometer

How is the depth of the water sampler determined?

• By estimating visually

• By measuring the length of the rope

• By using a measured tape

• By using a GPS device

What is the purpose of the brass messenger in the water sampling process?

• To measure the temperature of the water

• To release the water sampler

• To weigh down the sampler

• To mark the depth

What happens when the brass messenger reaches the water sampler?

• It signals the end of the sampling process

• It measures the water's salinity

• It opens the sampler to collect water

• It releases the cables and closes the sampler