Why would a lake not freeze?
Most lakes and ponds don’t completely freeze because the ice (and eventually snow) on the surface acts to insulate the water below. Fish have several adaptions to survive a winter below the ice. First, they are cold blooded meaning their body temperature matches their environment.
Why does water not freeze at the bottom of the ocean?
The primary reason is the salinity. The salt lowers the freezing point and increases the density. So saltier water freezes at a lower temperature and sinks to the bottom. So any cold water near the ocean bottom that is nearing the freezing point will generally rise, lower its salinity, and then not freeze.
Which ocean is mostly frozen?
The Arctic
Can oceans freeze?
Ocean water freezes just like freshwater, but at lower temperatures. Fresh water freezes at 32 degrees Fahrenheit but seawater freezes at about 28.4 degrees Fahrenheit , because of the salt in it. At least 15 percent of the ocean is covered by sea ice some part of the year.
Does the ocean get saltier as it gets deeper?
Cold, salty water is dense and sinks to the bottom of the ocean while warm water is less dense and remains on the surface. Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface.
Is the ocean salty because of whale sperm?
It’s all whale sperm. Everybody Google it. Because that’s why the water is salty. In fact, the saltiness “comes from many millions of years of water flowing over rocks and minerals,” according to oceanographer Simon Boxall.
Why is deeper water more salty?
At very great depth, salinity increases again because the water near the ocean bottom originates from polar regions where it sinks during the winter; freezing during the process increases its salinity.
Why does heated air rise up?
As the molecules heat and move faster, they are moving apart. So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward.
Is the floor colder than the ceiling?
Fundamentally, the air on the floor will be the temperature of the floor. Things are different at night when the ceiling can be colder than the floor. Convection may then transfer heat from the floor to the ceiling in a “thermal siphon”, but only when the floor is hotter than the ceiling.
Is the top of a room hotter?
Warm air rises. Physics is the challenge here, because hot air rises and cold air sinks. So your upstairs has a natural tendency to be warmer than lower levels.
Why is my room so hot even with the fan on?
The easy answer is that the heat is getting trapped inside your house, and then the heat rises so it goes upstairs and then it gets stuck in your bedroom. Even if you could turn some fans on and take the hot air out of your bedroom in a matter of minutes the heat would just return.
Why is my bedroom colder than the rest of the house?
If one room in your house is colder than the rest, the first things to inspect are the heating vents, ductwork and thermostat readings. Inspections of this sort should be performed at least once yearly.
Why is my room so hot and stuffy?
Stuffy air typically happens in rooms that are closed off and lacking ventilation. The longer a room is closed off the stuffier it becomes, which can result in larger and more expensive problems within a home. Stuffy air can sometimes indicate that a room is retaining moisture in the walls, ceilings, or floors.