Question

mason notices that his boat sinks lower into the water in a freshwater lake than in the ocean. what could explain this?
○ the boat is more dense in salt water.
○ the boat is less dense in salt water.
○ salt water is less dense than freshwater.
○ salt water is more dense than freshwater.

Explanation:

To float, a boat displaces water equal to its weight. Ocean (salt) water has more density (due to salt) than freshwater. Higher - density fluid provides more buoyant force per unit volume displaced. So, the boat needs to displace less volume of salt water (floats higher) and more volume of freshwater (sinks lower). The boat's density doesn't change with water type. Salt water is denser than freshwater.

Answer:

D. Salt water is more dense than freshwater.