Introduction to RAG (Retrieval Augmented Generation) and its application
Day 2 Continental Drift
1. DATE:9/13/11
LEQ: What evidence did Alfred Wagner
use to explain his idea of continental
drift?
REMINDER: COMPLETE SENTENCES!!!
1. What is the densest layer of the Earth?
2. How do you know?
3. What is the coolest layer of the earth?
4. What is the layer of earth with LESS pressure than
the mantle?
5. List the layers of the earth in order, from the inside
out! (does not need to be in a complete sentence!)
3. LET’S REVIEW
MOST DENSE LAYER = ___________
LAYER WITH THE LEAST PRESSURE = ____
LAYER WITH THE HOTTEST TEMPERATURE =
___________
LAYER BELOW THE MANTLE = ________
LEAST DENSE LAYER = ___________
5. Today’s LEQ: What evidence did
Alfred Wagner use to explain his idea
of continental drift?
By the end of today, you should be able to…
1. Identify the three types of evidence used to
support the concept of Pangaea and
continental drift
9. READING: ALFRED WAGNER
• Alfred Wagner was a German scientist, geophysicist, and meteorologist
that lived in the early 1900s.He was an extreme science nerd, and he
even died right in the middle of an expedition to study artic air masses.
He and his fellow scientists were in Greenland in the middle of winter,
and they ran out of food and supplies. Wagner tried to ski to go find
help, and his body was found buried in snow six months later! He is
most notable for his theory of continental drift, proposed in 1912.
After noticing that the different continents of the Earth seemed to fit
together like a puzzle, he hypothesized that the continents were once
joined together in one big supercontinent, called Pangaea (which is
Greek for “All-Earth”). Over time, he thought that the continents
slowly driftedapart, which made them break into pieces like we see on
the map today. Alfred’s ideas were considered pretty radical for his
time, but he was persistent with his theory because he had three solid
types of evidence to prove it! Just what was this evidence? You will
find out soon!
10. What evidence do scientists use to justify the
theory that the continents were once
connected like this picture?
(HINT: THINK ABOUT THE PUZZLE!)
12. CONTINENTAL DRIFT: the idea that the
continents are slowly drifting apart
Evidence:
FOSSILS CLIMATE GEOLOGY
(ROCKS)
18. CONTINENTAL DRIFT: the idea that the
continents are slowly drifting apart
Evidence:
FOSSILS: CLIMATE: GEOLOGY:
PANGAEA: all the continents
stuck together!
20. HOT Q:
• DO YOU THINK THAT THE CONTINENTS ARE
STILL MOVING TODAY? WHY OR WHY NOT?
The continents are still
moving! They move
about 5 cm each year!!
22. ROCK TYPE FOSSIL TYPE
SHALE T - triceratops
LIMESTONE S - stegosaurus
BASALT V - velociraptor
GRANITE X - tyrannosaurus
GNEISS CLIMATE EVIDENCE
QUARTZ ICE/GLACIER EVIDENCE
OBSIDIAN TROPICAL PLANT EVIDENCE
23. SUMMARIZER
• Scientists found coconut fossils in Antarctica
where it is very cold. Describe how this is
possible in at least 2 sentences.
Editor's Notes
Teacher-point to different layers and cold-call students to make sure they can all name each one
“Be thinking about what evidence you used while putting together your partner’s puzzle”