BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 43, Problem 1CT
Summary Introduction
To discuss:
In what direction, the prevailing winds carry the isotopes when a tsunami damaged a nuclear power plant in Fukushima, Japan on March 2011.
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Check out a sample textbook solutionStudents have asked these similar questions
A sample of a igneous rock contains small amounts of radioactive potassium and argon. Using the ratio of 40Ar to 40K, it is determined that only 25% of the original parent isotope remained. How old is this rock sample?
Please include thought process and a therefore statement. Thank you very much, have a good day!
Why is the biological half-life of a radioisotope shorter thanits physical half-life?
Suppose a scientist finds a rock with an interesting fossil. Curious to know the age of the fossil, she takes the rock to a lab. The
lab determines the amount of rubidium (Rb) and strontium (Sr) in the rock. The scientist is familiar with radiometric dating and
knows that she can now calculate the age of the rock, 1, using an isochron. The Rb-Sr isochron equation is
87.
Rb.
[edr – 1]
86
°Sr.
87
87
Sro
86
Sro
86
Sr.
87.
Rb
3.807 and
89.60. In a published table, she finds that
Using the lab's values, she calculates the isotope ratios as
86
Sr.
87
= 0.7129. She also finds that the decay constant,
86
the ratio of strontium-87 to strontium-86 at the formation of the rock was
Sro
2, for rubidium-87 is 1.42 x 10-11.
Use the equation and provided data to calculate t. Put your answer in scientific notation and round to the nearest tenth.
years
x10
What is the approximate age of the rock in billions of years? Round to the nearest tenth.
billions of years
t =
Chapter 43 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 43 - Prob. 1SACh. 43 - Which latitude will have the most hours of...Ch. 43 - Prob. 3SACh. 43 - Prob. 4SACh. 43 - Prob. 5SACh. 43 - ____________ have a deep layer of humus-rich...Ch. 43 - Prob. 7SACh. 43 - Prob. 8SACh. 43 - Prob. 9SACh. 43 - Prob. 10SA
Ch. 43 - Chemoautotrophic bacteria and archaea are the...Ch. 43 - Prob. 12SACh. 43 - Prob. 13SACh. 43 - Unrelated species living in geographically...Ch. 43 - Prob. 15SACh. 43 - Prob. 1CTCh. 43 - Owners of off-road recreational vehicles would...Ch. 43 - Prob. 3CTCh. 43 - London, England, is at the same latitude as...Ch. 43 - Prob. 5CT
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- A rock sample which originally contained 400 grams of radioactive isotope X now contains 25 grams of the material. The half-life of isotope X is 10,000 years. How old is the rock sample? (Give your answer without any punctuation or lables. For example: 15000).arrow_forwardRocks forms when lava erupts, cools, and crystallizes on Earth’s surface.arrow_forwardWhich parent isotope is most useful for dating samples that are greater than 100 million years old? a potassium-40 b lead-206 c argon-40 d uranium-238arrow_forward
- What are stromatolites? From what we know of their formation today, why might we expect them to have been present early in Earth’s history?arrow_forwardAbout how much mercury was emitted by fossil fuel combustion in Asia? A.)340 tons B.)0 tons C.)40 tons D.)525 tonsarrow_forwardLong-wave solar radiation is more energetic than short-wave solar radiation. True Falsearrow_forward
- In stratosphere, which elements acts as a catalyst in degradation of ozone and release of molecular oxygen?arrow_forwardOf the solar radiation that Passes through the atmosphere only about 10% reaches the earths surface. True or false?arrow_forwardAssume a flat Friedmann-Robertson-Walker universe.Calculate the redshift z at which the temperature of the CMB was T = 10 T0, where T0 is thetemperature of the CMB today. Assuming the universe was matter dominated throughout itsevolution, calculate the time at which T = 10 T0 in Gigayears.arrow_forward
- If half of a quantity of radioactive material decays in 1 year, in another 10 yearsarrow_forwardOzone in the upper atmosphere is depleted when it reacts with nitrogen oxides. The rates of the reactions of nitrogen oxides with ozone are important factors in deciding how significant these reactions are in the formation of the ozone hole over Antarctica as shown. One such reaction is the combination of nitric oxide, NO, with ozone, O3:arrow_forwardMost of the mercury emitted in South and Central America was through ______? A.)artisanal and small-scale gold mining B.)fossil fuel ,combustion C.)metal production D.)cement productionarrow_forward
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