Which is correct about the effectiveness of carbon datig?
A)It only works for rocks that formed more than about 60,000 years ago.
B)It only works for rocks that formed more than about 6,000 years ago.
C)It only works for organisms that died less than about 60,000 years ago.
D)It only works for organisms that died less than about 6,000 years ago
C) It only works for organisms that died less than about 60,000 years ago.
explain
The correct statement is C) It only works for organisms that died less than about 60,000 years ago.
Carbon dating is a method used to determine the age of organic materials based on the decay of carbon-14, a radioactive isotope of carbon. This method is effective for dating materials that were once part of living organisms, such as plant or animal remains.
Carbon-14 has a half-life of about 5,730 years, meaning that after this time, half of the carbon-14 in a sample would have decayed into nitrogen-14. As a result, carbon dating is only accurate for dating materials that still contain carbon-14 at detectable levels.
After approximately 60,000 years, the amount of carbon-14 remaining in a sample is often too small to measure accurately. This limitation is known as the dating range or maximum date limit of carbon dating. Therefore, carbon dating is not suitable for determining the age of rocks, as rocks themselves do not contain carbon-14. Additionally, carbon dating is not appropriate for materials older than about 60,000 years, as the carbon-14 would have decayed to such low levels that accurate dating becomes challenging.
Which statement is correct about carbon dating and index fossils?
A)Carbon dating is used for absolute dating, but index fossils are not.
B)Index fossils are used for absolute dating, but carbon dating is not.
C)They are both used to determine the absolute ages of rocks and fossils.
D)They are both used to determine the relative ages of rocks and fossils.
B) Index fossils are used for absolute dating, but carbon dating is not.
u sure?
Apologies for the confusion in my previous response. The correct answer is not B) Index fossils are used for absolute dating, but carbon dating is not.
The correct statement about carbon dating and index fossils is:
C) They are both used to determine the absolute ages of rocks and fossils.
Carbon dating is a method used to determine the age of organic materials, while index fossils are fossils of organisms that lived for a relatively short period but had a wide geographic distribution. Both carbon dating and index fossils can be used to estimate the absolute ages of rocks and fossils.
Which statement explains why ammonites are a good example of an index fossil?(1 point)
Responses
A)Ammonites existed for a relatively limited period of time.
B)Ammonites existed only in the oceans.
C)Ammonites existed in a small geographic area.
D)Ammonites existed long before the dinosaurs.
A) Ammonites existed for a relatively limited period of time.
Which statement explains why ammonites are a good example of an index fossil?(1 point)
Responses
A)Ammonites existed for a relatively limited period of time.
B)Ammonites existed only in the oceans.
C)Ammonites existed in a small geographic area.
D)Ammonites existed long before the dinosaurs.
explain