Evidence of continental drift by Carter Caccamo https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l Sadie Poudevigne, Keeley Mesec, Carter Caccamo en-us 2020-09-18 18:08:36 UTC 2024-06-01 19:36:37 UTC hello@padlet.com What are glacial striations/scratches and how are they caused? keeleymesec2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/765359530 glacial grooves and striations are gouged or scratched into bedrock as the glacier moves downstream. Boulders and coarse gravel get trapped under the glacial ice, and scratch and gouge the land as the glacier pushes and pulls them along.
source ]]> 2020-09-21 17:45:27 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/765359530 What was Mesosaurus and why was it important? (include where it was found) (question 3) sadiepoudevigne2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/765409040 The mesosaurus was a freshwater crocodile type reptile. It lived during the early Permian. It was found on the far south end of Africa and South America. This reptile was important because it provided evidence towards the continental drift since it’s fossils were found in two very separate regions.
link]]> 2020-09-21 17:55:18 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/765409040 example of glacial striations keeleymesec2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769474939 State Monument located on Kelley's Island in Ohio. These grooves were scoured into the rock by an ice sheet that once covered part of North America.
source]]> 2020-09-22 18:08:26 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769474939 What was Glossopteris and why was it important? (include where it was found?) (Question 3) sadiepoudevigne2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769498024 The Glossopteris was a woody, seed-bearing shrub or tree. Some could reach 30 meters tall. It’s fossils were found in mid Antarctica, the bottom of south America, the bottom of India and mid Australia. It was also important in the theory that there was continental drifting.
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]]> 2020-09-22 18:13:06 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769498024 What are varves and tillites and how are they created? keeleymesec2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769501359 A varve is a layer or series of layers of sediment deposited in a body of still water in one year. And a tillet is made up of sediment that was carried or deposited by a glacier and later cemented to form rock.
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]]> 2020-09-22 18:13:46 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769501359 Why are each of these good pieces of evidence for continental drift? (Question 3) sadiepoudevigne2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769511725 The fossils' locations were spread everywhere throughout the world, and plants can’t swim and it was proven that the crocodile type reptile couldn’t just swim across a continent. This shows that at one point, the continents were very close.  
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]]> 2020-09-22 18:15:54 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769511725 Why glacial striations good evidence for continental drift? keeleymesec2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769517464 More evidence comes from glacial striations – scratches on the bedrock made by blocks of rock embedded in the ice as the glacier moves. These show the direction of the glacier, and suggest the ice flowed from a single central point.
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]]> 2020-09-22 18:17:09 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769517464 Define paleomagnetism? (question, 1) cartercaccamo2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769536442 A continental shelf is the edge of a continent that lies under the ocean. Link  ]]> 2020-09-22 18:21:03 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/769536442 What did scientists in the 1960’s find out about the edges of the continental shelves? (question, 2) cartercaccamo2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/770524016 several hundred meters below sea level. In the early 1960s, scientists produced a map that attempted to fit the edges of the continental shelves at a depth of 900 meters.  Link  ]]> 2020-09-23 01:26:19 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/770524016 Why is this good evidence for continental drift (question, 3) cartercaccamo2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/773299069 This is good evidence of continental drift because these are regions where streams have deposited large quantities of sediment, thus enlarging the continental shelves. The overall fit was even better than what the supporters of continental drift suspected it would be. ]]> 2020-09-23 18:10:36 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/773299069 Define paleomagnetism? (question, 1) cartercaccamo2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/773312374 Paleomagnetism is the study of magnetic rocks and sediments to record the history of the magnetic field.  link]]> 2020-09-23 18:13:44 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/773312374 How can magnetic minerals in rocks record the position of the magnetic poles through geologic time? (question, 2) cartercaccamo2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/773318394 When molten lava solidifies at mid-ocean ridges, iron-containing minerals in the lava align themselves with Earth's active magnetic field. These minerals record the orientation of the magnetic field at the time they solidified. Link there is a demo on the link press play on it, it shows how this works.]]> 2020-09-23 18:15:11 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/773318394 Why is this good evidence for continental drift? (question, 3) cartercaccamo2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/773326639 because when the continents seperated this i how they started off. this started the breaking of the continents and they drifted off.]]> 2020-09-23 18:17:10 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/773326639 Define paleoclimatic data. (Question 6) sadiepoudevigne2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/774250614 derived from natural sources such as tree rings, ice cores, corals, and ocean and lake sediments. ... The data include geophysical or biological measurement time series and some reconstructed climate variables such as temperature and precipitation. 
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]]> 2020-09-24 01:21:08 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/774250614 What geologic clues can one look for to determine ancient climates? sadiepoudevigne2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/774262009 Buried in sediment at the bottom of the ocean, frozen in glaciers and ice caps, and in tree rings. All of these help scientists better understand the climate of a place. In tree rings you can see if there was a drought or a flourishing year of rain. link



]]> 2020-09-24 01:26:35 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/774262009 Which mountain ranges might have been connected at one point? keeleymesec2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/777428528 Caledonia and the Appalachian mountains
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]]> 2020-09-24 19:55:14 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/777428528 What are the similarities between the mountain ranges to suggest they were connected? keeleymesec2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/777441925 The rock layers fit together and they have very similar rock composition.
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]]> 2020-09-24 19:59:59 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/777441925 Describe how the mountains have changed since they’ve separated. keeleymesec2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/777455779 They have grown and the shape has changed a little bit. Also the animals that are living on them have 
changed. 
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]]> 2020-09-24 20:04:57 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/777455779 Why are the mountains good evidence for continental drift? keeleymesec2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/777464315 Because it shows that the mountains were once one giant mountain with the same rock composition and now they are multiple separated mountains.
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]]> 2020-09-24 20:08:12 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/777464315 Why are tropical fossils and plants found today in places with cold climates good evidence for continental drift? sadiepoudevigne2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/778107377 Finding these plants and fossils in such rare locations would suggest that at one point it was warm enough to supply life for plants/fossils. This would mean that the continents now have shifted and moved since then. 

]]> 2020-09-25 02:08:24 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/778107377 Give an example of this evidence. (question, 4) cartercaccamo2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/779105831 this is good evidence because the continents fit together nicely. and it forms pangea. ]]> 2020-09-25 13:24:16 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/779105831 Which era of geologic time reveals paleoclimatic evidence? sadiepoudevigne2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/780795278 Paleozoic era (570 to 225 million)


]]> 2020-09-25 21:20:46 UTC https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/780795278 Where was this evidence found? (give specific examples) sadiepoudevigne2025 https://padlet.com/cartercaccamo2025/5v2dwwu0wk9ff06l/wish/780811967 A specific example is glaciation which was wide-spread ice spread across the supercontinent Pangaea, which later separated into Northern Australia, southern Africa, India and a strip of South America.
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Another example is the tree rings, when the rings are thicker it means that there was a rainy season. When they are thin, that means there was a dry season.

example 3-
Milutin Milankovitch's theory of the precise timing of the ice ages by looking at fossilized coral reefs that formed in the South Pacific. Today these reefs form steps along the shore of Papua New Guinea.
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