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Economic differences between different regions of a country
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∙ 14y ago
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Why are index fossils so important to geologists?
Index fossils are very important to geologists because they identify geological time periods. Index fossils are found within a specific layer of rock- So when one finds the age of the rock layer, that is also the age of the index fossil.
Which characteristics of a fossil would you make it useful as an index fossil in determining the relative age of widely separated rock layers?
C). a narrow time range and a wide geographic range
What is an ig index used for today?
An IG Index is used in the United Kingdom. It is used for spread betting for a large range of financial markets. Ig Index is overseen by the Financial Services Authority.
What is a glycemic index used to measure?
The glycemic index is used to measure how quickly ones blood sugar rises after eating food. The higher the food is in carbohydrates and or sugar, the more the index rises.
Differences between relative refractive index and absoulate refractive index?
Refractive Index(i) Refractive index of a medium is that characteristic which decides speed of light in it.(ii) It is a scalar, unit less and dimensionless quantity.(iii) Absolute refractive index :When light travels from vacuum to any transparent medium then refractive index of medium w.r.t. vacuum is called it's absolute refractive index i.e. vacuumµmedium = c/vAbsolute refractive indices for glass, water and diamond are respectively µg = 3/2 = 1.5, µw = 4/3 = 1.33 and µD = 12/5 = 2.4(iv) Relative refractive index :When light travels from medium (1) to medium (2) then refractive index of medium (2) w.r.t. medium (1) is called it's relative refractive index i.e. 1µ2 = µ2/µ1 = v1/v2 (where v1 and v2 are the speed of light in medium 1 and 2 respectively).(v) When we say refractive index we mean absolute refractive index.(vi) The minimum value of absolute refractive index is 1. For air it is very near to 1. ( 1.003)
To be useful as an index fossil fuel spices must have existed for how long?
To be useful as an index fossil fuel, spices must have existed for about 1000 years.
Why are the Eurypterids in these cross sections not useful as index fossils?
The Eurypterids in these cross sections not useful as index fossil because they are only found in certain areas are a long lived organism
Is the Glycemic Index Useful?
The Glycemic Index is useful for some people who are struggling to lose weight. It is a study that shows how food in consumed and burned by the body and for some people how the food effects them.
Why are index fossils more useful then other fossils to paleontologist?
It is because the index fossils has better minds than the paleontologist.
What fossils are useful in determining the relative age of rocks?
Index fossils
Why are index useful to geologists?
they tell the absoute age of rcoks which they occur
What would be helpful for locating useful information in a book?
Table of Contents and glossarythe index and table of contents (APEX)Using the index
Is it true that To be a useful index fossil a species must have been rare?
False.
What must be true for a fossil organism to be useful as a index fossil?
The absolute age of the index fossil was determine by radioactive dating or another absolute method
Why are index fossils useful for figure out the age of a set of disturbed rock layers?
index fossils are useful for figuring out the age of a set of disturbed rock layers by index fossils are used to determine when rock layers were formed so if they were used to figure out the age of a set of disturbed rock layers than they can also figure out when they were formed .
What are index fossils useful for?
Because organisms that became index fossils lived only during specific intervals of geologic time, geologists can estimate the ages of rock layers based on the particular index fossils they contain.
Why the book index page is useful?
An index is important because rather than having to flip through an entire book to find a single answer, you can look in the book's index and it will tell you the page where a specific topic is reviewed/discussed.
