gradient
At a depth of 500 m below the surface, the pressure would be approximately 5 atmospheres (1 atm for every 10 m of depth).
The pressure is greater at 20 m below the surface of the sea. Pressure increases with depth due to the weight of the water above. Each additional meter of depth adds more pressure, so the pressure will be higher at 20 m compared to 10 m below the surface.
The apparent depth of an object submerged in water can be calculated using the formula: apparent depth = real depth / refractive index. Since the refractive index of water is approximately 1.33, the apparent depth of an object 5 meters below the water surface would be around 3.76 meters.
At depths between 50 to 200 km below Earth's surface, temperatures and friction, along with the presence of water, could cause melting of subducting crustal material. Rising currents of mantle rock could melt from decompression at shallower depths.
Pressure increases with depth below the surface of a fluid due to the weight of the fluid above pushing down. This relationship is described by the hydrostatic pressure formula P = ρgh, where P is pressure, ρ is density, g is acceleration due to gravity, and h is depth.
temperature increases with depth
50km
The temperature at 3.4 km below the Earth's surface generally increases with depth due to geothermal heating. On average, the geothermal gradient is about 25-30 degrees Celsius per kilometer, so at 3.4 km below the surface, the temperature could be around 85-102 degrees Celsius.
The geothermal gradient is approximately 25 degrees Celsius per kilometer of depth below Earth's surface. This means that the temperature increases by about 25 degrees Celsius for every kilometer closer to the Earth's core. This gradient is used to estimate subsurface temperatures for geothermal energy extraction and other geological studies.
it increases
As the depth increases, the density increases also.
For the most part, yes. (There are exceptions, of course.)
At depths of 50 to 200 km below Earth's surface rocks will melt.
As depth beneath the Earth's surface increases, both temperature and pressure increase. This is due to the weight of the overlying rock and the Earth's internal heat. The increase in pressure and temperature with depth is known as the geothermal gradient.
none of your business
The constant temperature underground is known as the geothermal gradient, which averages around 25-30°C per kilometer depth. This means that the temperature increases with depth below the Earth's surface.
Check your thermometer. That's how hot it is on the outer crust where you are. There exists a geothermal gradient where temperature rises with depth from the surface. See the link below.