Radiometric dating Study guides, Class notes & Summaries

Angiosperm - Answer -flowering plant -has seeds with casing -has endosperm in seeds -fruit -most diverse Radiometric methods of dating - Answer -K/Ar (lava, 500K+ years) -C14 (conversion to N14, 40K yrs) -Thermoluminescence (burning) -Electron spin (teeth) -Uranium Lead (mineral deposits) Relative methods of dating - Answer -magnetic reversals -extinct and distinct species Primate - Answer -climbing/locomotion adaptations -big brain -opposable thumbs and prehensile tails -na...

List the current scientific consensus of the age of the a) Universe, b) Earth, and c) Moon, and explain how scientists have calculated these ages - a) Age of the Universe: 13.77 +/- 0.04 billion years old (Measured by calculating how fast our universe is and has been expanding since the Big Bang) b) Age of the Earth: 4.54 +/- 0.05 billion years old (Measured by radiometric dating of meteorites that formed at the same time as Earth.) c) Age of the Moon: 4.425 +/- 0.025 billion years old (M...

radiometric dating - general approach used to determine the age of specimens using the rate of decay of radioactive isotopes radiocarbon dating - a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14 potassium-40 dating - radiometric dating method often used in the assessment of volcanic intrusions in sedimentary layers. It is based on measurement of the product of the radioactive decay of an isotope of potassium (K) into ar...

How does the fossil record reveal information about evolutionary changes? - Species change over time, and all organisms descended from a single common ancestor. What features make Tiktaalik a transitional fossil, and role do these types of fossils have in the fossil record? - Tiktaalik splits the difference of what you think of as a fish and a limbed animal. These fossils show how organisms evolved from water to land. What can anatomy and DNA reveal about evolution? - DNA shows the amount o...

BIO 1M03 Test 2 Questions And Answers Angiosperm - ANS -flowering plant -has seeds with casing -has endosperm in seeds -fruit -most diverse Radiometric methods of dating - ANS -K/Ar (lava, 500K+ years) -C14 (conversion to N14, 40K yrs) -Thermoluminescence (burning) -Electron spin (teeth) -Uranium Lead (mineral deposits) Relative methods of dating - ANS -magnetic reversals -extinct and distinct species Primate - ANS -climbing/locomotion adaptations -big brain...

Biol 110 Final Study Guide With Complete Solutions Which of the following is the best use of dendrochronology? - To determine climate patterns in the last 5000 years. Radiometric carbon dating is a type of ________________ dating. During the radioactive decay of C14, it decays into ______________. - absolute / N14 The Meadowcroft Rock Shelter near Avella, Pennsylvania is an early Native American archeological site from which many artifacts have been recovered. An archaeologist uses Carb...

Biol 110 Final Study Guide With Complete Solutions Which of the following is the best use of dendrochronology? - To determine climate patterns in the last 5000 years. Radiometric carbon dating is a type of ________________ dating. During the radioactive decay of C14, it decays into ______________. - absolute / N14 The Meadowcroft Rock Shelter near Avella, Pennsylvania is an early Native American archeological site from which many artifacts have been recovered. An archaeologist uses Carb...

BIO112 Spring 2024 Exam 1 Terms radiometric dating general approach used to determine the age of specimens using the rate of decay of radioactive isotopes radiocarbon dating a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14 potassium-40 dating radiometric dating method often used in the assessment of volcanic intrusions in sedimentary layers. It is based on measurement of the product of the radioactive decay of an isot...

radiometric dating ,radiocarbon dating,potassium-40 dating, half-life, punctuated equilibrium, Cambrian explosion, macroevolution, microevolution, Linnaeus, Lamarck,Cuvier,Lyell and Hutton,Malthus,descent with modification,selective breeding The process of humans intentionally selecting a few organisms with desired traits to serve as parents of the next generation, over time producing organisms with altered characteristics species a group of related organisms sharing a distinctive form. If sexua...

ANTH 101 Practice Test Questions with Correct Answers Explain how fossils are formed and why they are not equally prevalent in all areas. - Answer-fossils are the remains of past life forms that have been partially or wholly transformed into rock and displaced through a long process of chemical replacement. minerals in bones and teeth are replaced with rock forming minerals like iron and silica. can be from any body part however 99% are made up of teeth and and bones. taphonomy (how fossils a...