What is continental drift theory and its evidences?
In the early part of the 20th century, scientists began to put together evidence that the continents could move around on Earth’s surface. 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.
What are the 4 proofs of continental drift?
The four pieces of evidence for the continental drift include continents fitting together like a puzzle, scattering ancient fossils, rocks, mountain ranges, and the old climatic zones’ locations.
What is continental drift theory Slideshare?
His idea was called the continental drift theory. Alfred Wegener • Alfred Wegener said that all of the continents were once together as one land mass, which he named Pangaea, which means “all land”. • This land mass broke apart into separate continents about 20 million years ago.
What is the importance of continental drift theory?
continental drift, large-scale horizontal movements of continents relative to one another and to the ocean basins during one or more episodes of geologic time. This concept was an important precursor to the development of the theory of plate tectonics, which incorporates it.
Who is the father of continental drift?
Alfred Wegener
Alfred Wegener: The Father of Continental Drift.
What observations led to the proposal of continental drift?
What observations led to the proposal of continental drift? The matching coastlines of continents of opposite sides of the Atlantic Ocean suggest that the continents were once joined. Why was the theory of continental drift not accepted early on?
Is Pangea a fact?
Modern geology has shown that Pangea did actually exist. Within the next 250 million years, Africa and the Americas will merge with Eurasia to form a supercontinent that approaches Pangean proportions.
What is plate tectonic theory PDF?
Principles of plate tectonics • The Earth is composed of a mosaic of thin. rigid plates (pieces of lithosphere) that move. horizontally with respect to one another. • Plates interact with each other along their. plate boundaries.
What is plate tectonics PPT?
Plate Tectonics • The Earth’s crust is divided into 12 major plates which are moved in various directions. The plates collide, pull apart, or scrape against each other. Each motion causes different types of features on the Earth’s crust. Below the lithosphere (which makes up the tectonic plates) is the asthenosphere.