1. 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

2. 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

3. 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.

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

5. What is a proxy?
the authority to represent someone else

6. 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.

8. 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

9. Video
For each video clip, write a summary of the evidence found in the proxy and how it is used.
Ice Cores
tree ring video

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

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