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Submarines and whales have ways to adjust their buoyancy. That's how they sink and float as needed. Each has a different method of adjusting buoyancy.
The submarine controls buoyancy by adjusting ballast. Submarines have ballast tanks that can be filled with air or flooded down with water. When full of air, the ballast tanks provide enough buoyancy to keep the submarine afloat (provided the pressure hull is not full of water). The ballast tanks are open on the bottom, and have valves (called main vents) on the top. When we open the main vents, air is forced out by sea water that is coming in at the bottom. Once the ballast tanks are flooded, the boat will submerge. The crew then "fine tunes" the buoyancy by adding water to or pumping water out of tanks inside the pressure hull. These tanks are also used to trim the ship so it is neither heavy in the bow or the stern.
Whales can fill their lungs with air to float or swim on or near the surface. When they dive, they take a breath and swim down against the upward force of buoyancy. As they move deeper, pressure forces their ribs (which are not rigidly attached to their vertebrae) inward and their lungs are compressed. This reduces buoyancy and makes it easier to go deeper. As far as actual "control" of their buoyancy, investigators are still not clear about many aspects of the workings of whale physiology, and debate and speculation continue.
What else can I help you with?
What is the term for the depth of water needed to float a boat clear of the water?
The term is impossible. A boat cannot float clear of the water.
How submarine sink or float on water?
Submarines sink or float by adjusting their buoyancy through the use of ballast tanks. When water is pumped into these tanks, the submarine becomes heavier than the water around it, causing it to sink. Conversely, to float, the submarine expels water from the ballast tanks, reducing its weight and allowing it to rise to the surface. This ability to control buoyancy enables submarines to navigate underwater and at the surface efficiently.
Example of objects that float in water?
Wood, plastic, and Styrofoam are examples of objects that float in water. This is because they are less dense than water, causing them to displace an amount of water equal to their weight, allowing them to float.
How much water is needed to float a ship?
The amount of water needed to float a ship depends on factors such as the weight and size of the ship, as well as the density of the water. A ship displaces an amount of water equal to its weight, so it will float as long as it displaces its weight in water.
How do submarines stay afloat?
Submarines stay afloat by using a combination of buoyancy and ballast control. When they want to surface, they use compressed air to force water out of ballast tanks, making the submarine lighter and allowing it to float. To dive, submarines take in water into these tanks, increasing their weight and causing them to sink. By adjusting the amount of water in the ballast tanks, submarines can maintain their desired depth in the water.
Do whales float or glide in water?
Whales primarily glide in water rather than float, as they are large, buoyant animals that use their powerful tails to propel themselves through the ocean. Their bodies are streamlined, allowing them to move efficiently through the water. While they can rest at the surface and appear to float, they typically engage in gliding movements to travel and hunt.
What is the term for the depth of the water needed to float a boat clear of the?
The term is impossible. A boat cannot float clear of the water.
How can submarines float and sink?
Submarines change their depth by use of ballast tanks. To dive, they open their tanks so that they become filled with water. They also angle their dive planes. To surface, they pump the water out of their tanks and fill them with pressurised air.
Why do whales float better in salt water?
Salt water is denser than fresh water, giving a higher net buoyancy force upward from the bottom of the whale, allowing it to float better. This applies to anything; the more dense the medium, the easier it is to float on it.
What do krill and blue whales eat?
Your question is mistaken. Blue whales eat krill. Krill are tiny organisms that float about in the water and are kind of like plankton.
How do submarines float sink and stay in the middle of the sea or ocean?
They use ballast tanks to contain sea water or air to control their depth
What s the term for the depth of te water needed to float a boat clearar of the bottom?
The term you are referring to is "draft". The draft of a boat is the depth of water needed for it to float clear of the bottom.
