Uses And Dangers Of Radiation Jeopardy Template

Carbon Dating	Uranium dating	Radioactive Tracers	Radiation and You
100 Most carbon on Earth exists in the form of_____ Carbon-12	100 What is uranium dating? The dating of very old, nonliving things	100 Describe what a tracer is A chemical compound in which one or more atoms have been replaced by a radio isotope	100 What are three sources of natural background radiation? Cosmic rays, earth minerals, and radon in the air
200 True or false: All living things contain both carbon-12 and carbon-14 True	300 How is the percentage of lead isotopes in an ancient uranium-bearing rock related to its age? The older the rock, the higher percentage of lead isotopes.	200 Describe two uses of radioactive tracers 1. Agricultural research - plant fertilizer 2. to study the process of digestion (there are many more)	200 True or false: cosmic radiation is more intense at lower elevations than at higher elevations. False
400 How is the ratio of carbon-14 to carbon-12 in a living organism related to the ratio of carbon-14 to carbon-12 in the atmosphere? The same	200 Which is the letter of the age of the oldest rocks from samples from the moon that have been dated using uranium dating? A. 1.2 million years, B. 2.2 million years, C. 4.2 billion years, D. 12.2 billion years C. 4.2 billion years	300 Give one example of a useful radio isotope Cesium .137 (and many more)	300 Our bodies are bombarded most by massless chargeless particles called______ Neutrinos
500 How do scientists figure out how long ago a plant or animal died using carbon dating? Measuring ratio of carbon-14 to carbon-12	400 How is uranium dating different than carbon dating? carbon dating is only for things that were once alive, where uranium dating is for nonliving things.	400 True or false: radio isotopes can prevent food from spoiling quickly. True	400 What is the most damaging form of radiation? A. Alpha particles B. gamma rays C. beta particles D. Positrons B. gamma rays
300 True or false: Archeologists use carbon dating techniques on skeletons. True	500 How can you calculate when it was formed? By using the half-lives of uranium isotopes and the percentage of lead isotopes in the uranium bearing rock.	500 True or false: radio active isotopes have the same element, but its atoms have more proton particles in their atomic nuclei false	500 True or false: people who receive high doses of radiation have shorter life expectancies than those who do not. True

Uses and Dangers of Radiation

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