We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byToby Dowse
Modified over 4 years ago
Absolute Dating Chapter 3, Sec.3
Process to find the approximate age of rocks or fossils
Atoms Smallest part of matter Made of protons, neutrons, electrons Center called the nucleus
Everything is made of atoms
Protons, neutrons in nucleus Electrons move around nucleus
Every element has a diff. # of protons
Isotopes Atoms of the same element with different # of neutrons
Radioactive Decay Most atoms are stable Some are unstable and breakdown or decay (radioactive)
High energy particles are given off Can damage cells, organs, etc.. X-rays, gamma rays, electrons, protons, neutrons
Decay occurs at a constant rate called half-life
Half-life The time it takes for one-half of a sample to decay
Problem I start with 10 grams of a sample It’s half-life is 20 years After 20 years, how much left? After 40 years, how much left 5 grams 2.5 grams
Some unstable isotopes decay into stable isotopes
3 radioactive dating methods Uranium-Lead Method Potassium-Argon Method Carbon-14 Method
CHAPTER 24 Nuclear Energy I. Radioactivity (p ) I. Radioactivity (p )
IV. Isotopes 2 or more atoms of the same element having the same number of protons BUT different numbers of neutrons.
Finding a rock’s birthday
Absolute Dating Radioactive Dating. Radioactivity Almost all of the elements contain radioactive isotopes Isotopes are atoms of the same element with.
8.3 Radioactive Dating.
Radioactive Dating Section 10.3.
Using radioactivity in dating Reviewing basic atomic structure Nucleus –Protons – positively charged particles with mass –Neutrons – neutral particles.
UNIT 3 Geologic Time and Fossils
ABSOLUTE AGE Absolute dating- used to determine the age of a rock or fossil more exactly based on the properties of atoms An atom:
Methods of Dating Absolute and Relative.
Chapter 7: Earth Materials as Time Keepers
Dating Notes I will be able to identify which methods are best for determining the ages of various materials.
Sci. 3-3 Absolute Dating: A measure of Time Pages
Section 8-3 Radioactive Dating. Intro To Matter Elements – the simplest form of matter (i.e. Hydrogen (H) or Oxygen (O) – Atoms – the smallest particle.
Relative and absolute age dating of rocks. What is absolute age dating? The Principle of Superposition and rock correlation provide the relative ages.
Lesson 3 Reading Guide - KC This principle states that sedimentary layers are originally laid down horizontally. STARTER Relative-Age Dating.
Radioactivity Chapter 6.1. Radioactivity Comes from an unstable nucleus Can be either… Particles or Energy (as electromagnetic radiation) or Both.
Mass of individual atoms Lesson 1 – introduction to project and atomic structure.
© 2018 SlidePlayer.com Inc. All rights reserved.