# What Two Forces Influence The Movement Of Earthâ€™S Plates

## What Two Forces Influence The Movement Of Earthâ€™s Plates?

It seems likely that gravity drives the plates and the motions of the plates help to stir the mantle rather than the convection of the mantle driving the plates.

## What are the two forces that influence the movement of plates?

Heat and gravity are fundamental to the process

Lithospheric plates are part of a planetary scale thermal convection system. 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 force is responsible for the movement of tectonic plates?

Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth’s crust.

## What are the 2 mechanisms for plate motion?

Ridge-push refers to gravity causing lithosphere to slide downhill away from the elevated mid-ocean ridges. Slab-pull refers to the weight of subducting slabs dragging the rest of the plate down into the mantle.

## What are the 3 causes of plate movement?

Lesson Summary

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Additional mechanisms that may aid in plates moving involve ridge push slab pull and trench suction. In ridge push and slab pull gravity is acting on the plate to cause the movement.

## What is the stronger force behind plate movement?

Slab pull is that part of the motion of a tectonic plate caused by its subduction. In 1975 Forsyth and Uyeda used the inverse theory method to show that of the many forces likely to be driving plate motion slab pull was the strongest.

## What causes the movement of tectonic plates?

Earth’s crust called the lithosphere consists of 15 to 20 moving tectonic plates. … 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.

## How does convection cause the motion of plates that drives plate tectonics quizlet?

Part of the mantle consists of the molten material that circulates in convection currents beneath the earths crust. This process drives plate tectonics. … when two oceanic plates pull apart at a divergent boundary magma rises and new crust is formed on the ocean floor.

## What is the force that moves the continents?

The theory of plate tectonics suggests that it is convection currents in the mantle of the earth that causes the movement of the continental plates.

## How do driving forces and resisting forces affect plate movements?

“slab pull” As lithospheric plates move away from midocean ridges they cool and become denser. … This helps to pull the rest of the plate down with it. resisting forces The main effect of the underlying mantle is to produce a shearing or frictional force resisting the motion of lithospheric plates.

## What are the mechanisms that made the plates move according to the theories?

Plates of lithosphere move because of convection currents in the mantle. One type of motion is produced by seafloor spreading. Plate boundaries can be located by outlining earthquake epicenters. Plates interact at three types of plate boundaries: divergent convergent and transform.

## What are the effects of plate movements?

Plate motions cause mountains to rise where plates push together or converge and continents to fracture and oceans to form where plates pull apart or diverge. The continents are embedded in the plates and drift passively with them which over millions of years results in significant changes in Earth’s geography.

## What are the 3 different possible causes of plate movement How do they differ from each other?

The movement of the plates creates three types of tectonic boundaries: convergent where plates move into one another divergent where plates move apart and transform where plates move sideways in relation to each other.

## WHAT driving force facilitates this movement?

The driving force that facilitates the movement of the lithospheric plates to move slow is the convection current in the mantle. Convection current is the process by which less dense material rises and more dense material sinks.

## What caused Pangea to break up?

Scientists believe that Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle. This movement in the mantle causes the plates to move slowly across the surface of the Earth.

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## What force is present at a convergent boundary?

A convergent boundary is an active region of deformation where 2 or more tectonic plates meet. As a result of the pressure and friction between the plates earthquakes and volcanoes are common in these areas.

## Which was an argument used to dispute the theory of plate tectonics?

Answer: Option D Continents cannot cut through the ocean floor. Explanation: It was believed earlier that oceans were the land bridges that used to connect different geologic plates of planet earth earlier had now sank down and thus there exists no connection between the tectonic plates.

## What are the four types of tectonic plate movements?

What are the major plate tectonic boundaries?
• Divergent: extensional the plates move apart. Spreading ridges basin-range.
• Convergent: compressional plates move toward each other. Includes: Subduction zones and mountain building.
• Transform: shearing plates slide past each other. Strike-slip motion.

## Where are the tectonic plates moving?

The Pacific Plate is moving to the northwest at a speed of between 7 and 11 centimeters (cm) or ~3-4 inches a year. The North American plate is moving to the west-southwest at about 2.3 cm (~1 inch) per year driven by the spreading center that created the Atlantic Ocean the Mid Atlantic Ridge.

## What causes the tectonic plates to move quizlet?

convection currents are a process in which the materials inside the mantle heat up and rise to the surface whilst the cooler liquid sinks as it sinks it then heats up and rises again. This continuous cycle is established: hot liquid rising cold liquid descending. These currents cause the tectonic plates to move.

## What force drives plate tectonics quizlet?

The driving force behind plate tectonics is mantle convection. Also called earthquake waves.

## How do convection currents influence plate tectonics quizlet?

Theory that the Earth’s crust is divided into tectonic plates which move around due to convection currents in the mantle. The movement caused within a fluid by hotter and therefore less dense material to rise and colder denser material to sink under the influence of gravity. Plates pull apart and magma rises up.

## How does convection work and how does it move tectonic plates quizlet?

Convection occurs in the mantle underneath Earth’s tectonic plates. … Rising mantle material at mid-ocean ridges creates the potential for plates to move away from the ridge with a this force. Slab pull. When tectonic plates collide the denser plate (slab) will sink into the mantle along a subduction zone.

## What is the force that moves continents and tectonic plates quizlet?

Convection currents in the mantle is the force that caused the movement of the plates that carry the continents.

## What is the force that moves the continents Quizizz?

The continents drift on tectonic plates that move due to mantle convection. The continents shift as a result of changes in Earth’s magnetic field.

## What kind of force resist plate movement away from the center?

Between two off-set spreading centres the plates move past one another forming transform faults. Since the direction of movement is opposite drage forces are establishd between these sections of the plate. This drag force resists plate movement away from the spreading centre.

## What are the four resisting forces?

The four main resistance forces are objects with mass inertia and momentum friction gravity and air resistance.

## What are resisting forces?

In physics resistive force is a force or the vector sum of numerous forces whose direction is opposite to the motion of a body and may refer to: Friction during sliding and/or rolling. Drag (physics) during movement through a fluid (see fluid dynamics)

## What happens when two plates collide what force is behind the movement and collision of plates?

If two tectonic plates collide they form a convergent plate boundary. Usually one of the converging plates will move beneath the other a process known as subduction. … The new magma (molten rock) rises and may erupt violently to form volcanoes often building arcs of islands along the convergent boundary.

## What are two main aspects of convection that cause plate motion?

Heat is continuously flowing outward from Earth’s interior and the transfer of heat from the core to the mantle causes convection in the mantle (Figure 4.3. 1).

## How the movement of the plates leads to the formation of folds and faults?

In conclusion the movement of the Earth’s plates results in the folding and faulting of the Earth’s surface due to processes such as compression tension and shearing and in doing so deform and rearrange the Earth’s crust.

## What happens when two plates carrying continental crust collide?

Plates Collide When two plates carrying continents collide the continental crust buckles and rocks pile up creating towering mountain ranges. The Himalayas were born when the Indian subcontinent smashed into Asia 45 million years ago.

## What is the mechanism behind the movement of Earth’s tectonic plates quizlet?

What is the mechanism behind the movement of Earth’s tectonic plates? The oceans extend deep into the lithosphere which allows for the drifting movement of the overlying crust. Earth’s outer core is a liquid and generates the convection that allows for tectonic plate movement.

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