How does radiometric dating work? What is a half life? What is the Law of Superposition? Compare and contrast relative dating and radiometric dating? People that disagree with the age of the earth based on radiometric dating disagree because…..(record one additional point of view)
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How does radiometric dating work?
What is a half life?
What is the Law of Superposition?
Compare and contrast relative dating and radiometric dating?
People that disagree with the age of the earth based on
radiometric dating disagree because…..(record one additional
point of view)
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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).Radiometric dating does not measure the age of an individual atom. It is a measure of the age of a quantity of atoms—a statistic. As with any statistical measure, its values may deviate around an average (sampling error, Section 1.8). Imagine that one sample of rock is dated ten different ways. Nine of the tests yield an age close to 225,000 years. One test yields an age of 3.2 million years. Do the nine consistent results imply that the one that deviates is incorrect, or does the one odd result invalidate the nine that are consistent?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 29 27 28 30 330 29 29 30 Based on the given figure, answer the following questions (Note: BYA=Billion Years ago; MYA= Million years ago) The oldest eukaryote might be dated back to? Each day represents how many years? When did the first prokaryotic fossil exist? When did photosynthesis first emerged? The multicellular organisms appeared? ~1.5 BYA ~2.5 BYA ~10 BYA ~3.5 BYA ~150 MY ~50 MY ~1 MY ~4.5 MYA ~ 10 MYA ~1 BYA
- + FAlpQLSdhkT-CA8CXZZX-5utkvr4IY6K1qFdA05BqTWJIUboovIH-Cg/viewform?hr_submission%=DChkigLW74pgBEhA plder G Genetic drift- Wikip. A Algebra Foundatio. G Image result for sur. S Classwork How many total electrons can possibly fit into the fourth energy level (hint: the 4th energy level has s, p, d, and f orbitals) 2 8. 18 32 This is a required question In which block of the periodic table is Uranium (U) found? Choose How many valence electrons does calcium (Ca) have? *x + pOLSdhkT-CA8CXZZX-5utkvr4IY6K1qFdA05BqTWJIUb00ovIH-Cg/viewform?hr_submission-DChkigLW74pgB er Genetic drift - Wikip.. Algebra Foundatio. Image result for sur. 6 Classwork If penguinium (element number 119) is ever discovered, what will its electron configuration be?* O(Rn] 8s' O [Rn] 7s' O [og] 8s' O [Og] 7s What is the charge of an electron? no charge positive neutral negativeCan you help solve the extinctions and also find the concentration of the unknown? Nucleosides absorbance Pathlength 1.0cm (concentration=100uM) Number Nucleobase Absorbance Wavelength Maximum (nm) Extinction Coefficient (L/mol^cm) 255.0 207.0 203.0 242.0 260.0 251.0 1 A 2 T 3 C 4 G 5 U 6 Unknown 3.552 2.4413 2.3831 2.8855 2.1115 1.578
- Which of the following is least reasonable regarding the Urey-Miller experiment? Group of answer choices The experiment was an important breakthrough in the study of the origin of life. The experiment conifirmed that several of the key molecules of life could have been synthesised naturally on the primitive Earth. The amino acids and other molecules produced in the experiment, and possibly present in the early atmosphere, could have participated in 'prebiotic' chemical processes, ultimately creating life. This experiment, and others which followed, suggests that simple biologically significant molecules can evolve naturally under sets of conditions that may have existed not only on early Earth, but potentially elsewhere in the solar system and beyond. The experiment was the first demonstration of abiogenesis (life from non-life).Choose the answer from the given concept below. A. Extraterrestial Origin B. Divine Creation C. Spontaneous Origin D. Big bang theory 1. this is the oldest among life's origin theories and the most accepted among others. It may vary vary on the practice of a religion, but it's commonality is that a Divine God created life. It is called the 2.Meteorite contains amino acids, nucleotide bases and sugar. Hundreds of thousands of meteorites and comets are known to have fallen into the early Earth, suggesting that it may contain some organic material. It is referred as the 3. Greek philosopher Aristotle proposed a theory eith the idea that living matter may arise from non-living matter. These are based on early observations such as the appearance of maggots in rotting meat, mice on corn and fish from mud of previously dry lakesIn radiometric dating, scientists use the half-life of a radioactive isotope, to determine the approximate age of rocks, and the fossils that are embedded in them. Half-life is the time it takes for half of a radioactive element to become stable.Uranium 238 (238U) is a radioactive element that decays into Lead (206Pb) after 4.5 billion years. 6) Scientists found a fossil in a layer of rock that tested as 1/8th U and 7/8th Pb. What is the approximate age of the fossil? A) 562 million years old B) 4.5 billion years old C) 9 billion years old D) 13.5 billion years old Not Graded
- 55: Radiometric dating ... Group of answer choices A: is based on the scientific observation that unstable “parent” isotopes decay into more stable “daughter” isotopes at a constant rate B: involves some event that initiates a radiometric clock, such as when a plant or animal dies (radiocarbon). C: has helped us determine that the Earth is roughly 4.54 billion years old. D: provides an accurate means of determining the age of materials that are very old. E: All of these answers are trueWhich 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-238lpQLSdhkT-CA8CXZZX-5utkvr4IY6K1qFdA05BqTWJIUb00vIH-Cg/viewform?hr_submission=D der Genetic drift - Wikip. Algebra Foundatio.. Image result for sur. Classu Evaluate this statement: OXYGEN ATOMS HAVE 8 NEUTRONS* Sometimes True Always True O Never True Evaluate this statement: OXYGEN ATOMS HAVE 8 PROTONS* Always True Sometimes True Never True What is Nitrogen's electron configuration?*