Which statement is TRUE according to plate tectonic theory?
Plates of rigid lithosphere lie on top of the weak asthenosphere
. Seafloor spreading occurs at this type of plate boundary. According to plate tectonic theory, convergence between two plates of ocean lithosphere created these volcanoes.
Which is true about plate tectonics theory?
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
. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.
What is true about the theory of plate tectonics quizlet?
The theory of plate tectonics states
that Earth’s surface is made of rigid slabs of rock, or plates, that move with respect to each other
. Earth’s tectonic plates are large pieces of lithosphere. These lithospheric plates fit together like the pieces of a giant jigsaw puzzle.
What are the 3 theories of plate tectonics?
The three types of plate boundaries are
divergent, convergent, and transform
. They are described in the following three concepts. Most geological activity takes place at plate boundaries.
Which statement is true according to the theory of plate tectonics Quizizz?
Which statement is true according to the theory of plate tectonics?
Lithospheric plates are destroyed at the mid-ocean ridges. Continents drift because they rest on lithospheric plates that move.
What are the 4 types of plate tectonics?
- 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.
Why do 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.
How many tectonic plates are there?
how many tectonic plates are there? There are major, minor and micro tectonic plates. There are
seven major plates
: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American.
What is plate tectonics in your own words?
Plate tectonics is the
theory that Earth’s outer shell is divided into large slabs of solid rock
, called “plates,” that glide over Earth’s mantle, the rocky inner layer above Earth’s core. … It lubricates the undersides of Earth’s tectonic plates, allowing the lithosphere to move around.
What is the cause of the plate tectonic activity 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 are the two theories of plate tectonics?
When the concept of seafloor spreading came along, scientists recognized that it was the mechanism to explain how continents could move around Earth’s surface. Like the scientists before us, we will now merge the ideas of
continental drift
and seafloor spreading into the theory of plate tectonics.
What are the 2 theories behind why tectonic plates move?
Why do plates move? One explanation for plate movements is
slab pull
. Plates are extremely heavy so gravity acts upon them, pulling them apart. Alternatively, as shown in the diagram, convection currents under the Earth’s crust transfer heat, which rises through the surface and cools back down in a circular motion.
What are the 3 causes of plate movement?
Mantle dynamics, gravity, and Earth’s rotation taken
altogether causes the plate movements. However, convectional currents are the general thought for the motion.
What do most tectonic plates contain?
Most tectonic plates contain
both oceanic and continental lithosphere
. All tectonic plates contain both oceanic and continental lithosphere. No tectonic plates contain both oceanic and continental lithosphere. Most tectonic plates contain both oceanic and continental lithosphere.
What causes the Earth’s crustal plates to move Quizizz?
Hot magma rises through the boundaries at
the mid-ocean ranges, creating new rock as it cools and pushing the plates apart. The strength of the Earth’s magnetic field is so strong it affects the iron filled rocks at mid-ocean ranges, pushing them apart causing the movement in the sea floor. Q.
What are 3 parts of Earth that convection and what does this create?
- the geosphere – plate tectonics.
- the atmosphere – wind.
- the hydrosphere – ocean currents.
