What is a half-spreading rate?
It is possible to calculate the spreading rate of one side of a mid-ocean ridge by dividing distance by time (Distance/Time = Rate). This is called a half-spreading rate. Multiply it by 2 to get the full spreading rate for both sides of the ridge.
What is meant by a spreading rate of?
Spread Rate means the number of basis points above or below a Qualified Benchmark as set forth in a Bid To Buy or a Bid To Roll Order.
How do you calculate spreading?
The calculation for a yield spread is essentially the same as for a bid-ask spread – simply subtract one yield from the other. For example, if the market rate for a five-year CD is 5% and the rate for a one-year CD is 2%, the spread is the difference between them, or 3%.
What is the rate of seafloor spreading?
It spreads about 6-16 centimeters (3-6 inches) every year. There is not an ocean trench at the East Pacific Rise, because the seafloor spreading is too rapid for one to develop! The newest, thinnest crust on Earth is located near the center of mid-ocean ridge—the actual site of seafloor spreading.
What is the spreading rate of paint?
An enamel paint of volume solids 55% spread at 16 sq metres per litre will give a film that is about 35 microns thick (1,000 microns equals one millimetre) and a three coat system will give a total film thickness of about 100 microns.
Whats the definition of mid-ocean ridge?
Definition of mid-ocean ridge : an elevated region with a central valley on an ocean floor at the boundary between two diverging tectonic plates where new crust forms from upwelling magma.
How do you calculate spreading rate in paint?
- Spreading Rate (m2/litre) =
- % Volume Solids x 10.
- 71 x 10 = 5.7 m2/litre ✓
- DFT Required.
What is the spread between two numbers?
To calculate the percentage difference between two numbers, a and b , perform the following calculations: Find the absolute difference between two numbers: |a – b| Find the average of those two numbers: (a + b) / 2. Divide the difference by the average: |a – b| / ((a + b) / 2)
Why do seafloor spreading rates change?
1 Answer. The seafloor changes because of the earth plates moving causing magma to spew in the water. The magma is then pushed outward causing the seafloor to move and change.
What is a typical rate for seafloor spreading quizlet?
Average rate of seafloor spreading is 1 meter per year.
What is spreading rate in paint?
There is a property of a paint called the ‘natural spreading rate’. This rate is tied up with the application properties of the paint and reflects how far a paint would be spread by someone simply painting by ‘feel’.
How do you calculate DFT and WFT?
Dry film thickness, or DFT is a measurement of the dry and cured material after all liquid has evaporated. DFT = WFT x % volume solids. For a 67% volume solids material with a WFT of 18 mils, DFT = 18 x 0.67 = 12 DFT. By simply reversing the equation DFT can also be measured to determine what the applied WFT was.
What does spread mean in math?
The spread in data is the measure of how far the numbers in a data set are away from the mean or the median. The spread in data can show us how much variation there is in the values of the data set.
What would happen if the rate of seafloor spreading was faster?
What would happen if the rate of seafloor spreading was faster than the rate of subduction? The Earth would grow larger.
What has the average rate of spreading along the Mid-Atlantic Ridge?
about 2.5 centimeters per year
The rate of spreading along the Mid-Atlantic Ridge averages about 2.5 centimeters per year (cm/yr), or 25 km in a million years.
What is a spreading half-rate?
(The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid-ocean ridge is the spreading half-rate and is equal to half of the spreading rate). Spreading rates determine if the ridge is fast, intermediate, or slow.
What is an example of a half equation?
Each half equation represents either the process of oxidation or reduction in terms of electron movement. For example, the reaction between bromine and iodide ions has the following two half equations: What is meant by half equation? A half equation is an equation that shows one-half of a redox reaction.
What is the spreading rate of a fast spreading ridge?
Additionally spreading rates determine if the ridge is a fast, intermediate, or slow. As a general rule, fast ridges have spreading (opening) rates of more than 9 cm/year. Intermediate ridges have a spreading rate of 5–9 cm/year while slow spreading ridges have a rate less than 5 cm/year.
What is the average spreading rate of a tectonic plate?
As a general rule, fast ridges have spreading (opening) rates of more than 90 mm/year. Intermediate ridges have a spreading rate of 40–90 mm/year while slow spreading ridges have a rate less than 40 mm/year. The highest known rate was over 200 mm/yr during the Miocene on the East Pacific Rise.