abyssal plane
Areas of underwater ground are called seabeds or ocean floors.
They are measured by how far above the ocean they are. The ocean is called "sea level". Sea level is 0.
Yes, mean sea level (MSL) is the average (mean) height of the sea.
There are a few things that cause the ocean surface not to be level. The small-scale variation or waves is caused by wind. The ocean level in various areas is also affected by wind patterns, ocean currents, variations in Earth's gravity, and the tides.
the abyssal plain
Sea level would be the name.
A crack in the ocean floor is called a rift. Rifts are areas where tectonic plates are pulling away from each other, leading to the formation of new crust underneath the ocean.
The five large areas of water on Earth's surface are called the oceans. These include the Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern (or Antarctic) Ocean, and Arctic Ocean. Together, they cover about 71% of the Earth's surface and are essential for climate regulation, marine biodiversity, and global trade.
Western Pacific Ocean
The South Pacific, the South Atlantic, the Indian and the Southern Ocean (also called the Antarctic Ocean).
Shallow parts of the sea or ocean are called shoals or shallows. They are areas where the water depth is relatively shallow, making them potentially hazardous for navigation.
It is the Southern Ocean.