How do we know the age of objects on Earth? ESS: 1-6 Apply scientific reasoning and evidence from ancient materials to construct an account of Earth’s.

Slides:

Advertisements

Similar presentations

Radiometric Dating Journal Entry #5 Continued. Radiometric Dating The process of determining the age of fossils by measuring the relative concentrations.

Advertisements

ABSOLUTE AGE Absolute dating- used to determine the age of a rock or fossil more exactly based on the properties of atoms An atom:

Absolute-Age Dating Chapter 21.3.

Sci. 3-3 Absolute Dating: A measure of Time Pages

 Hand in any work needed.  Get out a small piece of paper, PUT YOUR NAME ON IT.  When bell rings the quiz will start and you will have 1 minute per.

Radioactive Decay Radioactive elements are unstable. They decay, change, into different elements over time. Here are some facts to remember: The half-life.

Radioactive Decay Now, let’s see how we can use the half-life rate to

Absolute Dating of Rocks and Strata

Absolute Dating : A Measure of Time

Earth and Space…7b and c (7) Earth in space and time. The student knows that scientific dating methods of fossils and rock sequences are used to construct.

Radioactive Decay Please open up your journal to your chemistry unit and write a definition of an isotope at the beginning of these notes.

INTRODUCTION TO ABSOLUTE (RADIOMETRIC) DATING

Unit 5 – The Age of the Earth as Told by the Rocks.

Absolute Dating Chapter 7 Lesson 2.

Geologic History: Absolute Dating Unit 6 Absolute Age.

DO NOW What is stratigraphy? Write a statement about the age of the various layers (and fossils that may be found in those layers) you observe in the strata.

Nuclear Chemistry Ch 18, Pg 666, # 1-8

Absolute Dating Notes and Practice. Directions: Use the following presentation to complete the notes sheet.

Unit 7 Lesson 3 Absolute Dating

Radioisotopes, and their use in “dating” rocks. Radioactive Decay Certain isotopes of some elements are not stable. They naturally change (decay) over.

Determining Absolute Time.  Absolute Time: numerical time using a specific units like years  Isotopes: Form of an element with more or fewer neutrons.

(c) McGraw Hill Ryerson Half-life It can be difficult to determine the ages of objects by sight alone.  Radioactivity provides a method to determine.

List the order of events that took place: earthquake deposit D deposit B deposit G intrusive lava rocky deposit R river cuts through deposit E deposit.

Chapter 4.1. Half-Life Original Sample One half-life Two half-lives Three half-lives Contains a certain One-half of the One-fourth of One-eight of the.

Copyright © 2014 All rights reserved, Government of Newfoundland and Labrador Earth Systems 3209 Unit: 2 Historical Geology Reference: Chapters 6, 8; Appendix.

CARBON DATING Determining the actual age of fossils.

Review. What type of decay will happen if the nucleus contains too many neutrons? Beta Decay.

History of Life: Origins of Life Chapter Age of Earth The earth is about 4.5 billion years old How did we measure that? Radiometric Dating = calculating.

Wednesday, November 16 th, 2011 Bell Ringer: Using our 8 th Grade Average from yesterday, complete Table 2 of our Half-life Activity Handout. Half Life.

Absolute Dating Throughout the centuries mankind has striven to try to determine the exact age of Earth. What these people were seeking was a numerical.

Absolute Dating It’s a decaying relationship.. Radioactivity Henri Becquerel discovered radioactivity in Until then there was no way of finding.

Tuesday, November 15 th, 2011 Bell Ringer: In your science notebooks, answer the following question: “How do you think the half life of a radioactive element,

Tips on Dating. Why Date? Different methods of dating will help determine the actual age of a layer of rock or a fossil Scientists look at how much radioactive.

Radiometric Dating Continuation of Journal Entry #5.

Absolute Dating Establishing the Age of Objects. 1. Which best explains how geologic time scales can help scientists study the evolution of life on Earth?

ABSOLUTE AGE Absolute Dating Radiometric Dating Half Life Isotope Radioactive decay Carbon 14.

A Fossil.  Any method of measuring the age of an event or object in years.

Radioactive Half-life

Do Now: Think about this… If you were standing 10 feet from the wall, and I asked you to walk half the distance to the wall, how close would you be? If.

Chapter 8 Section 2 Handout

The half-life of a radioactive isotope explains the amount of time that it takes half of the isotope in a sample to decay.

Chapter 8 By: Jessica Arnold. Uniformitarianism The scientific principle that natural processes that operated in the past still operate the same way today.

Table of Contents Titles: Age and Time Page #: 13 Date: 9/12/12.

Absolute Age Dating. Geological Time Absolute time – putting dates on geological events using radiometric dating and other techniques.

Absolute Dating By: Leticia Ruvalcaba, Jason Diego, Sierra Enciso.

Absolute Dating.

Radioactive Dating What is Radioactive Decay?

Unit 2 Lesson 3 Absolute Dating Copyright © Houghton Mifflin Harcourt Publishing Company.

Absolute-Age Dating 8 th Grade Earth and Space Science Class Notes.

Radiometric Dating Chapter 18 Geology. Absolute Dating Gives a numerical age Works best with igneous rocks difficult with sedimentary rocks Uses isotopes.

Radiometric Dating “clocks in rocks”. Absolute Dating Gives a numerical age Gives a numerical age Works best with igneous rocks & fossils Works best with.

(7) Earth in space and time. The student knows that scientific dating methods of fossils and rock sequences are used to construct a chronology of Earth's.

 What are the limitations of relative age dating?  What do you think Absolute age dating is?

How Do We Know the Age of the Earth? February 26 th, 2015.

ABSOLUTE-AGE DATING: A MEASURE OF GEOLOGIC TIME. THINK ABOUT IT… How old is the Earth? Can it be determined? What are some tools or methods that scientists.

Do First Actions: Turn in yesterday’s worksheet 1. List the layers from youngest to oldest.

Absolute Dating: A Measure of Time January 27,2015.

 Look in your notes for the definition of half-life. Write it down.  You have 12g of radioactive material. How much material will be radioactive after.

Evolution and Change Chapter Eleven: Evolution Chapter Twelve: Earth and Life History.

Absolute Dating.

ABSOLUTE AGE DATING Absolute Age Dating is finding the numerical age of an object Artifacts (rocks or fossils) contain radioactive elements which are.

Applications. The half-life of a radioactive substance is the time it takes for half of the atoms of the substance to become disintegrated. All life on.

Absolute Dating. DO NOW WEDNESDAY Answer the questions about the rock layers in the picture. Answer the questions about the rock layers in the picture.

Determining Absolute Age

Ch.3, Sec.3 – Absolute Dating: A Measure of Time

AC Vocabulary Chapter 6 Section 3

Absolute Dating.

Absolute Dating.

Absolute Age of Rocks Notes

Absolute Dating.

Presentation transcript:

How do we know the age of objects on Earth? ESS: 1-6 Apply scientific reasoning and evidence from ancient materials to construct an account of Earth’s early history

Reading: Radiometric Dating Text Ch ( ) Usgs.gov  Search radiometric dating

Videos: Radiometric Dating discoveries-radiometric-dating/ discoveries-radiometric-dating/

M&M Half-Life Lab

Intro to lab 1.Define the following terms… – Radiometric dating – Decay – Half-life – Parent-isotope – Daughter-isotope 2.Read Directions. 3.This will be done in groups of about 3.

M&M Decay Table Run (Half life) Number Atoms in Parent Isotopes Class average Group 1Group 2Group 3Group 4Group 5Group 6Group 7Group

Number of Half-Lives Number of Parent Isotopes M&M Half-Lives

ES Radiometric Dating Quiz tinyurl.com/esquiz12 1. Use the M&Ms and the Half Life Graph to solve the questions. Red= Carbon 12 Yellow= Carbon 14 Half Life of Carbon 12=5700 years If you found an old fossil sample that had 5 red and 5 yellow in it, estimate how old it is based on the decay of Carbon 12 to Carbon 14

ES Radiometric Dating Quiz 2. How old would a fossil be if you had 2 reds and 8 yellows? Red=Carbon 12 Yellow=Carbon 14 Carbon 12 Half life= 5700 years

ES Radiometric Dating Quiz 3. How old would the fossil be if you had 1 red and 99 yellows? Red= C-12 Yellow= C-14 Half Life C12=5700 years

ES Quiz Based on your answers from #1-3, what are some weaknesses of carbon 14 dating of old objects?

ES Quiz 12 Blue= Uranium Green= Lead Half Life Uranium= 704 Million Years 5. How old is a rock sample that has 4 blues and 6 greens?

ES Quiz 12 Blue= Uranium Green= Lead Half Life Uranium= 704 Million Years 6. How old is a rock sample that has 1 blue and 9 green?

ES Quiz Why is Uranium decaying into lead better for finding out the age of the Earth? 8. Why is Carbon 12 decaying into Carbon 14 better for dating living things? 9. Why has Nuclear weapons testing weakened the radiometric dating of rocks? 10. Why is Carbon-14 dating going to become unreliable for future uses due to unnatural levels of carbon in the environment?