'Parent isotope' presentation slideshows

Chapter 25

Chapter 25. The History of Life on Earth. Overview: Lost Worlds. Past organisms were very different from those now alive The fossil record shows macroevolutionary changes over large time scales including The emergence of terrestrial vertebrates The origin of photosynthesis

1.49k views • 136 slides

Chapter 25

Chapter 25. The History of Life on Earth. Overview: Lost Worlds. Past organisms were very different from those now alive The fossil record shows macroevolutionary changes over large time scales including The emergence of terrestrial vertebrates The origin of photosynthesis

1.58k views • 136 slides

Chapter 25

Chapter 25. The History of Life on Earth. Overview: Lost Worlds. Past organisms were very different from those now alive The fossil record shows macroevolutionary changes over large time scales including The emergence of terrestrial vertebrates The origin of photosynthesis

1.56k views • 136 slides

Free-Response Question

Free-Response Question. Microevolution is the change in the gene pool from one generation to the next. Describe three ways in which microevolution can take place B. Describe the difference between microevolution and macroevolution. Answer to free response. Define microevolution and its causes

1.05k views • 83 slides

920 views • 72 slides

Chapter 25

Chapter 25. The History of Life on Earth. Overview: Lost Worlds. Past organisms were very different from those now alive The fossil record shows macroevolutionary changes over large time scales including The emergence of terrestrial vertebrates The origin of photosynthesis

851 views • 72 slides

Overview: Lost Worlds

Overview: Lost Worlds. Past organisms were very different from those now alive The fossil record shows macroevolutionary changes over large time scales including The emergence of terrestrial vertebrates The origin of photosynthesis Long-term impacts of mass extinctions. Fig. 25-1.

807 views • 69 slides

Chapter 25

Chapter 25. The History of Life on Earth. Overview: Lost Worlds. Past organisms were very different from those now alive. The fossil record shows macroevolutionary changes over large time scales including The emergence of terrestrial vertebrates The origin of photosynthesis

892 views • 64 slides

Chapter 25

Chapter 25. The History of Life on Earth. Overview: Lost Worlds. Past organisms were very different from those now alive. The fossil record shows macroevolutionary changes over large time scales including The emergence of terrestrial vertebrates The origin of photosynthesis

751 views • 64 slides

Chapter 25

Chapter 25. The History of Life on Earth. Concept 25.1: Conditions on early Earth made the origin of life possible. Chemical and physical processes on early Earth may have produced very simple cells through a sequence of stages: 1. Abiotic synthesis of small organic molecules

711 views • 58 slides

Dating rocks

Dating rocks. Relative dating Using a set of principles to put rocks in their proper sequences of formation Absolute dating Using radioactive decay to determine the exact age of rocks.

1.68k views • 49 slides

Lecture 12: Radioactivity

Lecture 12: Radioactivity. Questions How and why do nuclei decay? How do we use nuclear decay to tell time? What is the evidence for presence of now extinct radionuclides in the early solar system? How much do you really need to know about secular equilibrium and the U-series? Tools

672 views • 36 slides

Geological Time - really, really, really long!

Geological Time - really, really, really long!. Motion pictures are generally projected at 32 frames per second. Therefore, each frame (image) is on the screen for only split second- let each frame represent 100 years. Start movie at present and go back in time.

320 views • 31 slides

419 views • 23 slides

isotopes

isotopes. APPLICATIONS of nuclear processes. Military Power Radiation Many important economic and social benefits are derived from the use of isotopes and radiation: to observe and measure physical, chemical, and biological processes. Stable isotopes.

460 views • 19 slides

Half Life Practice

568 views • 17 slides

Half-life

Half-life. Measuring the speed of radioactive decay. Why?. It can be difficult to determine the ages of objects by sight alone. e.g. It can be difficult to tell which students in a classroom are oldest.

425 views • 13 slides

266 views • 11 slides

Chapter 4. Geological History of Earth

229 views • 8 slides

Absolute Dating

Absolute Dating. Absolute dating is the determination of an exact date Geologists use radiometric dating, which follows the principle of radioactive decay Radioactive decay occurs when a radioactive atom spontaneously decays to a different atom at regular rates through time.

562 views • 3 slides