Radiometric dating activity pennies apple dating patent
Half-lives of elements can range from microseconds to hundreds of billions of years, depending on the isotope. Study the chart that shows the half lives of various elements.Most of these elements can be found in rocks all over the Earth.All radioactive decay rates follow a similar pattern More information NOTES: CH 19 - The Fossil Record; History of Life; Macroevolution Vocabulary: Paleontologist Fossil record extinct Relative dating Absolute dating Geologic time scale Objectives: What are fossils?How More information Absolute Time Radiometric Dating: the source of the dates on the Geologic Time Scale Radiometric Dating Actually a simple technique. The parent:daughter ratio measured More information Science Section 7- Name: Block: Radioactivity Review. The plot below shows the height of a tree at different ages.1 point graph is missing or has incorrect 5 or more elements 0 points graph is unreadable or missing, or completely flawed Part 2 Conclusion Questions Question 1 4 points super sentence used to answer; both absolute and relative dating are defined, and an example of each is given.3 points did not use super sentence OR gave definitions of absolute and relative dating but did not give examples of each 2 points - gave examples of both, but did not give definitions OR gave a definition of only one 1 point - gave an example of one or the other, but did not define either one 0 points information is incorrect Question 2 4 points super sentence used to answer; number given in the answer matches the data collected 3 points did not use super sentence, but number given in the answer matches the data collected 0 points number given does not match the data, even if written in a super sentence Question 3 4 points - super sentence used to answer; number given in the answer matches the data collected; accept or reject hypothesis matches original hypothesis and data 3 points did not use super sentence, but number given in the answer matches the data collected; accept or reject hypothesis matches original hypothesis and data 2 points - only one part of the question is answered completely and correctly 1 point - only one part of the question is answered correctly, but not in a super sentence 0 points number given does not match the data, even if written in a super sentence Question 4 4 points- answer includes an explanation of why it s important to verify results and increase reliability of results, and includes an example of how this would be done using information from the chart 3 points- answer includes an explanation of why it s important to verify results and increase reliability of results, but no example is given 2 points- answer describes the importance of repeating experiments, but lacks detail or explanation 0 points- incorrect or unclear explanation Question 5 4 points - answer is more than one sentence that includes an example and includes the names of at least 2 rock types and how they are formed 3 points answer is one sentence that briefly describes how this can be with 2 rock types OR is more than one sentence but does not include at least 2 rock types 2 points - answer uses the process of the rock cycle in some way to explain, but is incomplete 1 point - answer describes how this can happen, but lacks examples, detail or explanation 0 points incorrect or unclear Level 3/ Honors question 4 points- answer connects back to radiometric dating and gives at least one clear reason why information from a non-earth source would help describe Earth events 3 points- answer connects back to radiometric dating and is well-explained 2 points- answer is well-explained, but does not connect to radiometric dating 1 point- answer is feasible 0 points- incorrect or unclear explanation Name: Date: Period: 1 2 3 4 5 6 7 Essential Question: How is the absolute age of rock measured?Each radioactive isotope has a characteristic, fixed, half-life. These are atoms that have decayed and are no longer radioactive. Record the number of pennies with heads in the table below. Conclusions: Look at the scoring guide before you start to answer these questions! What is the half-life of your 100 atoms of Carbon-14?
Different radioactive elements have different rates of decay. Put the pennies that had heads up back in the container, mix them, and spread them out on the table and repeat the above process until all the pennies are gone or until you have completed 15 trials. Graph the data in your data chart on the graph provided on the back. Checkpoint: Which data is more reliable: your own data or the class average? Experimental Design The independent variable (what I am trying to discover) is: The independent variable always goes on the X or Y axis (circle one) The dependent variable (what I am measuring as a result) is: The dependent variable always goes on the X or Y axis (circle one) Results Flip # # of pennies (time w/heads elapsed) (radioactive atoms remaining) Half Lives of Selected Radioactive Elements Radioactive Stable Half life Parent Daughter Potassium 40 Argon billion years Rubidium 87 Strontium billion years Thorium 232 Lead billion years Uranium 235 Lead million years Uranium 238 Lead billion years Carbon 14 Nitrogen years Graph your results using all of the rules for graphing!Why would scientists want to use more than one type of element to determine the age of a rock?Why aren t they satisfied with just using one element? Based on radiometric dating, the oldest rocks scientists have found on Earth are 4.6 billion years old, but not ALL rocks are that old.As you read about radioactive decay, think about how More information IDS 102 Geologic Processes, Part 4: Relative and Absolute Dating Methods Scientists use two different methods to estimate the age of geologic events on the Earth.Relative dating determines the order in More information Mr. Which radioactive isotope is most useful for determining the age of mastodont bones found in late Pleistocene sediments?