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In this activity, students make a model sea floor sediment core using two types of buttons to represent fossil diatoms. They then compare the numbers of diatom fossils in the sediment at different depths to determine whether the seas were free of ice while the diatoms were alive.
Subject: Environmental Science:Global Change and Climate:Climate Change:Paleoclimate records, Geoscience:Atmospheric Science:Climate Change:Paleoclimate records, Environmental Science:Global Change and Climate Resource Type: Activities Grade Level: Middle (6-8) Theme: Teach the Earth:Enhancing your Teaching:NGSS, Teach the Earth:Course Topics:Environmental Science, Atmospheric Science, Teach the Earth:Incorporating Societal Issues:Climate Change