History's Thermometers

Ancient coral beds give scientists clues to past ocean temperatures in much the same way that tree rings indicate historical weather conditions. High school scientists examine coral oxygen isotope ratios and plot the data as a function of the age of the coral. They relate their findings to climate change. Many resource links are included that can lead to extension activities. 

9th - 12th Science 15 Views 26 Downloads
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Lesson Plans
45 mins

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