Lesson 1.5: Pinpointing Time
Completion requirements
Lesson 1.5: Pinpointing Time
Modern geologists use the disintegration of radioactive elements to pinpoint the age of a rock. Lesson 1.5 provides insight into this method of dating rocks.- Read pages 319 and 320 of the textbook to the beginning of the investigation.
What is the shape of a curve where a quantity diminishes by a factor of one-half in constant time periods? The next investigation provides you with the answer to this question.
- Read the investigation on pages 320 and 321 of the textbook. Follow the directions, and answer the questions.
Check your answers with those in the “Suggested Answers” in the online course.
- Read pages 321 to 324 of the textbook, starting at “The New Alchemy” and ending at “1.5 Summary”. Answer the questions as you encounter them.
- Read “1.5 Summary” on page 324 of the textbook. Then, complete “1.5 Questions”.
Check your answers with those in the “Practice Answers” in the online course.