Alfred Wegener
What are 6 pieces of evidence that support continental drift?
- Fossils.
- Continents fit like Puzzle Pieces. Matching fossils preserved in rocks of the same age but found on different continents. Ex. …
- Matching Rocks. Puzzle – like fit of continental shelves. Ex. …
- Mountain Ranges.
- Glacier Striations.
- Coal Beds.
How do fossils provide evidence of Pangea?
One type of evidence that strongly supported the Theory of Continental Drift is the
fossil record
. Fossils of similar types of plants and animals in rocks of a similar age have been found on the shores of different continents, suggesting that the continents were once joined.
Did dinosaurs live on Pangea?
Dinosaurs lived on all of the continents
. At the beginning of the age of dinosaurs (during the Triassic Period, about 230 million years ago), the continents were arranged together as a single supercontinent called Pangea. During the 165 million years of dinosaur existence this supercontinent slowly broke apart.
What is the evidence for Pangea?
Glacial deposits, specifically till, of the same age and structure are found on many separate continents that would have been together in the continent of Pangaea. Fossil evidence for Pangaea includes
the presence of similar and identical species on continents that are now great distances apart
.
Why was Pangea not accepted?
Despite having this geological and paleontological evidence, Wegener’s theory of continental drift was not accepted by the scientific community, because
his explanation of the driving forces behind continental movement
(which he said stemmed from the pulling force that created Earth’s equatorial bulge or the …
What are 5 pieces of evidence that support continental drift?
The evidence for continental drift included
the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones
.
Where is Earth’s heat energy most concentrated?
Where Do We Find Geothermal Energy? Although heat from the center of the Earth is migrating to the surface everywhere, the heat is concentrated at
the edges of tectonic plates
.
What are two pieces of evidence for seafloor spreading?
Several types of evidence from the oceans supported Hess’s theory of sea-floor spreading-
evidence from molten material, magnetic stripes, and drilling samples
. This evidence also led sci- entists to look again at Wegener’s theory of continental drift.
Which process causes the continents to move?
Today, we know that the continents rest on massive slabs of rock called tectonic plates. The plates are always moving and interacting in a process called
plate tectonics
. The continents are still moving today. … As the seafloor grows wider, the continents on opposite sides of the ridge move away from each other.
What does evidence of glaciers tell us about Pangaea?
Evidence of ancient glaciers that existed around 250 million years ago can be found on the landmasses of South America, Antarctica, Africa, India and Australia. 4. Based on the evidence of glacier, it is likely that
the landmass of (South) Africa was located over the south pole at the time of Pangaea
.
What are trace fossils 2 examples?
Examples of trace fossils are
tracks, trails, burrows, borings, gnawings, eggs, nests, gizzard stones, and dung
. In contrast, a body fossil is direct evidence of ancient life that involves some body part of the organism.
Are Sharks older than dinosaurs?
Sharks are among Earth’s most ancient creatures. First evolving over 455 million years ago, sharks are
far more ancient than the first dinosaurs
, insects, mammals or even trees.
How big was the tsunami that killed the dinosaurs?
Now, scientist say they have found evidence of the resulting giant tsunami that swamped much of the Earth. In a study published in the journal Earth & Planetary Science Letters, researchers report how they discovered
52-foot-tall
“megaripples” nearly a mile below the surface of what is now central Louisiana.
Did dinosaurs come before or after Pangea?
When dinosaurs first came onto the world’s stage during the late Triassic period of the Mesozoic era—about 220 million years ago—the Earth’s land masses were still united in one comprehensive continent—Pangaea.
What did Earth look like before Pangea?
But before Pangaea, Earth’s landmasses ripped apart and smashed back together to form
supercontinents repeatedly
. … Just like other supercontinents, the number of detrital zircon grains increased during formation and dropped off during breakup of Rodinia.
