Question

the research station has an observation deck where scientists can observe the surroundings. there is also an underwater microphone to record sounds. what is the distance between the surface of the water and the observation deck? 15 meters. what is the distance between the surface of the water and the microphone? meters

Explanation:

Step1: Read the scale on the image

The scale shows the water - surface at 0. The microphone is at - 10 on the scale.

Step2: Calculate the distance

The distance is the absolute value of the position of the microphone relative to the water - surface. Since the position of the microphone is - 10 meters (negative because it is below the water - surface), the distance $d=\vert - 10\vert$.

Answer:

10