Which observation supports Wegener’s continental drift theory?
Which observation supported Wegener's theory of continental drift? Identical fossils were found on continents that were far apart.
What is the theory of continental drift?
The theory of continental drift is most associated with the scientist Alfred Wegener. In the early 20th century, Wegener published a paper explaining his theory that the continental landmasses were “drifting” across the Earth, sometimes plowing through oceans and into each other.
What are 2 pieces of evidence for 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.
Which of the following best explains why Earth is tectonically active?
Which of the following BEST explains why Earth is tectonically active? Earth's solid surface layer rotates more rapidly than the layers beneath it.
Which feature of Wegener’s idea of continental drift contributed to its rejection by the scientific community?
Which feature of Wegener's idea of continental drift contributed to its rejection by the scientific community? Wegener proposed that gravitational forces from the Sun and Moon could move continents. You just studied 44 terms!
What evidence supports the theory of plate tectonics?
There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.
How do tectonic plates 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.
How did the continents separate?
The idea that the continents were moving apart seemed inescapable, but we still did not know the mechanism. Some argued that plates were pushed apart along the ocean ridges, while others argued that plates were pulled apart along the subduction zones.
What makes tectonic plates move?
The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.
What is the evidence for continental drift and plate tectonics?
Fossil Evidence 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.
Which geological feature would be created based on the directions of the movement of the plates?
Which geological feature would be created based on the directions of the movements of the plates? A subduction zone. The shading in each map represents the distribution of a different type of soil.
What kind of surface features result from tectonic activity?
Deep ocean trenches volcanoes island arcs submarine mountain ranges and fault lines are examples of features that can form along plate tectonic boundaries. Volcanoes are one kind of feature that forms along convergent plate boundaries where two tectonic plates collide and one moves beneath the other.
What are two aspects of Wegener’s continental drift hypothesis that most US Earth scientists found objectionable choose all that apply?
What two aspects of Wegener's continental drift hypothesis were objectionable to most Earth scientists? His inability to identify a credible mechanism for continental drift and his suggestion that larger and sturdier continents broke through thinner oceanic crust like ice breakers cut through ice.
What does the theory of plate tectonics explain that continental drift theory could not explain?
Plate tectonics explains why Earth's continents are moving; the theory of continental drift did not provide an explanation. Therefore, the theory of plate tectonics is more complete. It has gained widespread acceptance among scientists.
What evidence supports the theory of plate tectonics What does this theory states and who proposed it?
Theory of Plate Tectonics was established by Alfred Wegener. Fossils and Mountain ranges were his evidences. Alfred Wegener created the idea of continental drift and wrote 'The Origin of Continents and Oceans' to support his idea.
What happen when two plates are moving apart?
A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth's mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge is an example of divergent plate boundaries.
What is formed when two plates are moving apart?
When two plates are moving away from each other, we call this a divergent plate boundary. Along these boundaries, magma rises from deep within the Earth and erupts to form new crust on the lithosphere. Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges.
When did the continents break apart?
The supercontinent began to break apart about 200 million years ago, during the Early Jurassic Epoch (201 million to 174 million years ago), eventually forming the modern continents and the Atlantic and Indian oceans.
What is released when tectonic plates move in what form?
When Earth's tectonic plates grind past one another, enormous amounts of energy can be released in the form of earthquakes. Volcanoes are also often found near plate boundaries because molten rock from deep within Earth—called magma—can travel upward at these intersections between plates.
Which of the following features is found along divergent plate boundaries?
A divergent plate boundary often forms a mountain chain known as a ridge. This feature forms as magma escapes into the space between the spreading tectonic plates.
What happens when tectonic plates move apart?
The plates diverge and this causes the construction of new rock. It happens when two tectonic plates pull apart and rock from the mantle rises up through the opening to form new surface rock when it cools. It happens at the start of a new ocean and continues at the mid-ocean ridge while the ocean is opening.
What happens when tectonic plates move?
At the “seams” where tectonic plates come in contact, the crustal rocks may grind violently against each other, causing earthquakes and volcano eruptions. The relatively fast movement of the tectonic plates under California explains the frequent earthquakes that occur there.
What is the surface features?
Abstract. Surface features, such as topographical or chemical cues, can affect cell behavior and morphogenesis. The present chapter provides the readers with notes on the influence of nanoscale and microscale topographic features in guiding cell orientation, interaction, organization, and assembly in myotubes.
What is the importance of Alfred Wegener’s continental drift hypothesis to the modern study of Earth’s geology?
Wegener's continental drift theory introduced the idea of moving continents to geoscience. He proposed that Earth (opens in new tab) must have once been a single supercontinent before breaking up to form several different continents.
What are the three major types of plate boundaries describe the relative plate motion at each of these 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.
Which of the following is true about the movement of continents?
Which of the following is TRUE about the movement of continents? Continents move along with the plate they are part of. Which of the following is TRUE about the movement of ocean basins? Ocean basins move along with the plate they are a part of.
What geologic features and events are evidences of the movement of the tectonic plates?
There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.
What happens when tectonic plates shift?
At the “seams” where tectonic plates come in contact, the crustal rocks may grind violently against each other, causing earthquakes and volcano eruptions. The relatively fast movement of the tectonic plates under California explains the frequent earthquakes that occur there.
When two tectonic plates pull apart what is formed on the ocean floor?
When two plates diverge in the middle of an ocean, it creates a kind of underwater mountain range called a mid-ocean ridge. As the plates move apart at mid-ocean ridges, magma moves up, cools and forms a new younger lithosphere.
What happens when plate tectonics move?
At the “seams” where tectonic plates come in contact, the crustal rocks may grind violently against each other, causing earthquakes and volcano eruptions. The relatively fast movement of the tectonic plates under California explains the frequent earthquakes that occur there.