Homework: Read 61A-67A ?’s 1-3 on 67A Read 77A-79A Warm Up: on p. 12 Describe the characteristics of a good scientific diagram Explain how to properly compare and contrast two subjects. Date Session # Activity Page 2/24-25 5 Elements of a good scientific diagram History found in rocks summary. 12 Climate Proxy Lab…formal grade 13 Homework: Read 61A-67A ?’s 1-3 on 67A Read 77A-79A Read 9B – 15B ?’s 1-4 on 15B Finish lab if necessary

8.E.2 Understand the history of Earth and its life forms based on evidence of change recorded in fossil records and landforms. 8.E.2.1 Infer the age of Earth and relative age of rocks and fossils from index fossils and ordering of rocks layers (relative dating and radioactive dating) 8.E.2.2 Explain the use of fossils, ice cores, composition of sedimentary rocks, faults, and igneous rock formations found in rock layers as evidence of the history of the Earth and its changing life forms

TLW complete a lab report and writing assignment that compares and contrasts Earth’s history found in various climate proxies (tree rings and ice cores)with history found in rock layers by analyzing samples, videos, and article.

What can you tell about the history of earth by studying rock layers? Brainstorm a list with your table.

What is a proxy? the authority to represent someone else

Paleoclimatology is the study of past climate.. What is a Climate Proxy Climate ‘proxies’ are sources of climate information from natural archives such as tree rings, ice cores, corals, lake and ocean sediments, etc. For a proxy to be useful it must first be established that the proxy (i.e. tree-ring width, stable isotope composition of ice, sediment composition) is in fact sensitive to changes in temperature (or some other environmental parameter). Ice cores and ocean sediment layers provide global climate information, while tree rings and coral bands provide regional climate information.

Tree Ring Diagram: Ice Core Diagram: sketch your tree ring, discuss physical characteristics you see, label them on your diagram. Read “Reading the Rings of a Tree”….add descriptions to the physical characteristics in your drawing Ice Core Diagram: sketch your ice core, discuss physical characteristics and inclusions you see, label them on your diagram Read “Stories in the Ice”…..add descriptions to the physical characteristics in your drawing

Video For each video clip, write a summary of the evidence found in the proxy and how it is used. Ice Cores https://www.youtube.com/watch?v=oHzADl-XID8 http://earththeoperatorsmanual.com/segment/5 http://natgeotv.com/ca/extreme-ice/videos/national-ice-core-lab tree ring video http://www.youtube.com/watch?v=FAOYkx8E-Gc http://www.youtube.com/watch?y=NENZ6TSc1fo https://www.youtube.com/watch?v=xmZO7aRgcW4

Articles Read each of the four small articles and add notes to your lab sheet

Writing Assignment Feature by feature or Subject by subject Ice cores……. Rock layers……