1. Warm Up: on p. 19
Describe the characteristics of a good scientific diagram
Date
Session #
Activity
Page
2/19,21 9
Diagram warm up
Earth History in rocks review 19
Climate Proxy Lab 20
Homework:
Study for Rock Layer Quiz next class period

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 explain the difference between the history found in rock layers and the history found in ice cores by comparing proxy samples, videos and articles.

4. Quick Review of Earth History in Rock Layers
Event History
What does it look like in a rock?
p19
Events that shape earth’s surface
Happen slowly over time
Happen quickly

5. Climate Proxy
Climate ‘proxies’ are sources of climate information from natural archives such as tree rings, ice cores, corals, lake and ocean sediments, and stalactites. For a proxy to be useful it must be a resource that is sensitive to changes in temperature (or some other environmental parameter). Climate proxies, especially ice cores, are vital to understanding Earth’s ancient climate.

6. Lab Form
You will draw a scientific
diagram of two different
climate proxies. Then read
a short piece of text about
the proxy, taking notes and
making any necessary
notations to your diagram.
But first, keeping in mind
the purpose of informational
text:
Brainstorm the qualities of
a good scientific diagram

7. 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 and notes to the back of your lab sheet in the tree ring section.
Ice Core Diagram:
Sketch your ice core, discuss physical characteristics and inclusions you see, label them on your diagram
Read Ice Core infographics…..add descriptions to the physical characteristics in your drawing and notes to the back of your lab sheet in the ice core section.

8. 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. Tubular sample showing layers of ice/snow built up over time
ICE CORES
Tubular sample showing layers of ice/snow built up over time
Vertical Timeline revealing
AIR QUALITY: pollen, CO2 levels (air bubbles within the ice core layers), dust
CLIMATE (temp changes, precipitation)
MAJOR EVENTS (volcanic eruptions, radiation from nuclear accidents/weapons)

12. Articles
Read each of the remaining articles for coral bands, Ocean/Lake Sediments and Cave Formations. Add information from each to your note sheet. Make sure you note what type of climate information is stored in each of these proxies.