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The twenty-one quizzes with a green marble and designated "Practice" have been adapted from the instructor's manual and other ancillary materials accompanying Sentence Sense: A Writer's Guide.
They are duplicated here with permission of the author, Evelyn Farbman, and the publisher, Houghton Mifflin Inc.
After two half-lives (9 billion years), what percent of the original uranium remains? Amount of Uranium at 4.5 billion years__________ ANSWER 2.
Percent here Percent Here Screenshot of graph at one half life Screenshot of graph at 2 half-lives After four half-lives (18 billion years), what percent of the original uranium would remain?
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Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years.
The age of the fossil must be determined so it can be compared to other fossil species from the same time period.As a member, you'll also get unlimited access to over 35,000 lessons in math, English, science, history, and more.Plus, get practice tests, quizzes, and personalized coaching to help you succeed. After one half-life (4.5 billion years), what percent of the original uranium remains? Predict how many of your 100 carbon 14 atoms are going to be left in the bucket after 5700 years The half life for Carbon-14 is 5700 years Prediction_____ Click play Hit Pause when the graph at top gets to the red line… Was your prediction accurate: YES or NO DESCRIBE WHAT HALF LIFE IS IN YOUR OWN WORDS HERE What percentage of carbon is left after 1 half life After three half-lives (13.5 billion years), what percent of the original uranium remains?