What is the measurement of ocean depths and the charting of the topography of the ocean floor?
Bathymetry
What is the study of underwater depth and features of the ocean floor?
Bathymetry (pronounced /bəˈθɪmətriː/) is the study of underwater depth of ocean floors or lake floors. In other words, bathymetry is the underwater equivalent to hypsometry or topography. The name comes from Greek βαθύς (bathus), “deep”, and μέτρον (metron), “measure”.
What is seafloor topography?
Ocean floor topography refers to the different forms in which the ocean floor bottom can exist. Science has established that the topography of the ocean floor is similar to the ground topography with features such as valleys, mountains, and plateaus. Three quarters of the Earth consists of ocean water.
Which of the following is the standard unit of ocean depth?
Soundings
What is depth of sea?
The average depth of the ocean is 3,700 meters (12,100 feet). But the deepest part ever recorded is located in the western part of the Pacific Ocean, in the Mariana Trench, at a depth of around 11,000 meters (36,200 feet). Bathymetry is the scientific term for measuring the depth of water in oceans, lakes and rivers.
What is the unit of measure for depth of sea?
fathom
What is the unit of depth?
Fathom: The common unit of depth in the ocean for countries using the English system of measurement. It is six feet or 1.83 meters. It can also be used in expressing horizontal distance, since 120 fathoms is nearly equal to one-tenth of a nautical mile.
Why is it called a fathom?
The longest of many units derived from an anatomical measurement, the fathom originated as the distance from the middle fingertip of one hand to the middle fingertip of the other hand of a large man holding his arms fully extended. The name comes from the Old English faedm or faethm, meaning outstretched arms.
How many feet deep is 10 fathoms?
A fathom is a unit of length equal to 6 feet….Convert 10 Fathoms to Feet.
| fathoms | ft |
|---|---|
| 10.00 | 60 |
| 10.01 | 60.06 |
| 10.02 | 60.12 |
| 10.03 | 60.18 |
What is the depth of water equal to 72 feet?
72 fathoms to ft conversion. A fathom is a unit of length equal to 6 feet. Its most common use is to measure the depth of water. It is based on the length of a man’s armspan.
How many fathoms is a 20 foot deep diving well?
Feet to Fathoms Conversion
| foot | 1 | 20 |
|---|---|---|
| fathom | 0.1667 | 3.3333 |
What is the furlong?
Furlong, old English unit of length, based on the length of an average plowed furrow (hence “furrow-long,” or furlong) in the English open- or common-field system. Each furrow ran the length of a 40 × 4-rod acre, or 660 modern feet. Today, the furlong is used almost exclusively in horse racing.
When was furlong first used?
A furlong is a standard unit of length that originated in England in the late 13th or early 14th century and equals 220 yards, which is an eighth of a mile. The furlong was the accepted unit of measure during the birth of horse racing in England in the 16th century and applied to racecourses.
What comes after a furlong?
Distance (length, height or width)
| Measure | Equivalent |
|---|---|
| 5½ yards | 1 perch, pole or rod |
| 40 poles | 1 furlong |
| 8 furlongs | 1 mile |
| 3 miles | 1 league |
How many English furlongs are in a mile?
eight furlongs
Why is 22 yards called a chain?
History and usage The chain was originally called an “acre’s breadth”, because it was the width of a acre, while a furlong was the length. Edmund Gunter, a clergyman and mathematician, invented a measuring device called a chain. The chain was 66 ft (20 m) long. It was divided by 100 in small metal links.
How many furlongs are in a mile?
8 Furlongs
Why is a mile 8 furlongs?
The rod was defined as 51⁄2 yards or 161⁄2 feet, and the mile was eight furlongs, so the definition of the furlong became 40 rods and that of the mile became 5,280 feet (eight furlongs/mile times 40 rods/furlong times 161⁄2 feet/rod).
Why is a foot divided into 12 inches?
Initially, the Romans divided their foot into 16-digits, but they later split it into 12 unciae (which in English means ounce or inch). In the United States, a foot was estimated to be 12 inches with an inch defined by the 1893 Mendenhall order which stated that one meter is equal to 39.37 inches.
What is a good time for 4 furlongs?
46-47 seconds
Are US and UK miles the same?
A British mile is the same distance as an American mile. You don’t have to worry about the metric system, like how a British pint is really an imperial pint, which is larger than an American pint.
How many feet are in a UK Mile?
5,280 feet
Is it miles or km in USA?
Because we use miles. Although to be technical, we do use kilometers sometimes. We have 5K and 10K runs, etc. But since we are not married to the metric system, there is no reason for us to start arbitrarily measuring road distances with some unfamiliar units of measure.
How long does it take to walk 0.5 of a mile?
A good walking pace is usually considered to be 4 mph. So 1 mile would take 15 min, a half mile about 7.5 minutes. Half a mile is like 800 meters, for me (i walk quite slowly) it takes around 10 mins for 1Km, so it can take around 7–8 mins to walk half a mile.
What is less than 1 mile?
a kilometer is shorter than a mile.
How many Kilo is a mile?
1.60934 kilometers
How can you tell which is longer 1 kilometer or 1 mile?
Kilometers are used in the metric system and each one is about 6/10 of a mile, which is used in the US standard system of measurement. A mile is a unit of length or distance measurement that is equal to 5,280 feet. A mile is longer than a kilometer. One mile is equal to 1.609 kilometers.