The image shows a ship using sonar to locate a school of fish. Which data are used to determine the distance of the ship from the fish? O A. The amount of time it takes the sound waves to travel from the boat to the fish B. The number of sound waves that bounce off the fish C. The number of sound waves the ship emits D. The amount of time it takes the sound waves to travel to the fish and back to the boat​

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Explanation:

A sonar device sends pulses of sound waves down through the water. When these pulses hit objects like fish, vegetation or the bottom, they are reflected back to the surface. The sonar device measures how long it takes for the sound wave to travel down, hit an object and then bounce back up.

D

Explanation:

I got it right

answer is a

explanation:

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e