Explore Your Knowledge: Take The Earth's Oceans Quiz Right Now!

Salinity refers to the concentration of dissolved salt in a liquid. It is a measure of the amount of salt present in a given quantity of liquid, usually expressed as a percentage or parts per thousand. Salinity is commonly used to describe the saltiness of water bodies such as oceans, seas, and lakes. It is an important parameter in oceanography and environmental studies as it affects the density, freezing point, and other physical properties of water. Sodium chloride, also known as table salt, is one of the many types of salts that contribute to the overall salinity of a liquid.

The temperature of ocean water does not necessarily increase as depth increases. In fact, the temperature profile of the ocean is more complex. The surface layer of the ocean is typically warmer due to solar heating, but as depth increases, the temperature tends to decrease. This is because sunlight cannot penetrate deep into the ocean, and the water at lower depths is often colder. However, there are some regions where temperature inversions occur, causing the water temperature to increase with depth. Overall, the statement that the temperature of ocean water increases as depth increases is false.

The given statement states that the ocean mentioned is the second largest ocean. Since the only ocean mentioned in the question is the Atlantic, it can be inferred that the correct answer is Atlantic.

The Arctic Ocean is the correct answer because it is the only ocean that is covered by ice. The Arctic region is known for its extensive sea ice cover, which forms during the winter months and melts during the summer. This ice cover is unique to the Arctic Ocean and sets it apart from other oceans, which do not have such widespread ice coverage.