What Is The Difference Between Continental Drift And Plate Tectonics?

Which of the following best explains the difference between continental drift and plate tectonics?

Which of the following best explains the difference between continental drift and plate tectonics.

Continental drift describes the motion of Earth’s continents only; plate tectonics describes the motion of the crust beneath Earth’s oceans as well..

Which is a line of evidence for plate tectonics?

Modern continents hold clues to their distant past. Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed.

What are the 4 evidence of continental drift?

They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.

Which observation is the best evidence to support the continental drift theory?

Alfred Wegener gathered evidence that the continents had moved 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 climate zones.

Why was Wegener’s continental drift rejected?

The main reason that Wegener’s hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth’s spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true.

How does Continental Drift support plate tectonics?

Wegener suggested that perhaps the rotation of the Earth caused the continents to shift towards and apart from each other. (It doesn’t.) 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.

What are the 4 types of plate tectonics?

There are three kinds of plate tectonic boundaries: divergent, convergent, and transform plate boundaries. This image shows the three main types of plate boundaries: divergent, convergent, and transform.

What causes the plates to move?

The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earth’s mantle and fit snugly against one another. The heat from radioactive processes within the planet’s interior causes the plates to move, sometimes toward and sometimes away from each other.

Why is the continental drift important?

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.

Which best describes the theory of plate tectonics?

The theory of plate tectonics states that the Earth’s solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle.

What theory came first continental drift or plate tectonics?

Although Wegener’s “continental drift” theory was later disproved, it was one of the first times that the idea of crustal movement had been introduced to the scientific community; and it laid the groundwork for the development of modern plate tectonics.

What is the evidence for 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.

What is plate tectonics?

From the deepest ocean trench to the tallest mountain, plate tectonics explains the features and movement of Earth’s surface in the present and the past. Plate tectonics is the theory that Earth’s outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core.

How do we know the plates are moving?

That plates are moving today can be demonstrated from earthquakes. The sense of relative movement of the earth on either side of seismically active faults can be determined from focal mechanisms – any for big-shallow earthquakes, can be directly measured from ground motion.

What is the major difference between continental drift and plate tectonics quizlet?

Terms in this set (11) What are the differences between Continental Drift and Plate Tectonics? Continental drift believes that the continents moved because the magnetism of the sea floor. Plate tectonics believes that the lithosphere & the asthenosphere of the continents caused them to move.

Which is not explained by plate tectonics?

Plate tectonics cannot explain dynamics of Earth and crust formation more than three billion years ago. Summary: The current theory of continental drift provides a good model for understanding terrestrial processes through history. … Plate tectonics is a theory of continental drift and sea floor spreading.

What drives plate tectonics?

Heat and gravity are fundamental to the process The energy source for plate tectonics is Earth’s internal heat while the forces moving the plates are the “ridge push” and “slab pull” gravity forces.

What are the three types of boundaries?

There are three main types of plate boundaries:Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. … Divergent boundaries – where two plates are moving apart. … Transform boundaries – where plates slide passed each other.