How the convection currents affect the movement of tectonic plates?
Convection currents drive the movement of Earth’s rigid tectonic plates in the planet’s fluid molten mantle. In places where convection currents rise up towards the crust’s surface, tectonic plates move away from each other in a process known as seafloor spreading (Fig. 7.21).
What was the driving force that caused the pieces of paper to move along the water’s surface?
At the surface, the water cools and becomes denser so the food coloring sank toward the bottom of the container creating convection currents. How did the convection model show how Earth’s mantle moves Earth’s plates? The water carried the pieces of paper to the sides of the container.
What is the purpose of the lab plate boundaries and movement?
The purpose of this lab is to have you identify the three ways in which tectonic plates can interact, and how these interactions explain the geologic processes of mountain building, volcanoes, deep ocean trenches, mid-ocean ridges, rift valleys, earthquakes, and sea floor spreading. Complete the following steps. 1.
What is the theory of plate tectonics quizlet?
Plate Tectonics. A theory that states that pieces of Earth’s lithosphere are in slow constant motion, driven by convection currents in the mantle. Fault. Breaks in the Earth’s crust where rocks have slipped past each other.
Why do plates move what triggers the movement?
Plates at our planet’s surface move because of the intense heat in the Earth’s core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down. As the cooled material sinks down, it is warmed and rises again.
What is the purpose of the lab?
To familiarize students with experimental apparatus, the scientific method, and methods of data analysis so that they will have some idea of the inductive process by which the ideas were originated. To teach how to make careful experimental observations and how to think about and draw conclusions from such data.
How plate movements and their interactions at plate boundaries affect and change the arrangements of continents and ocean basins on the earth?
At convergent boundaries, continental crust is created and oceanic crust is destroyed as it subducts, melts, and becomes magma. Convergent plate movement also creates earthquakes and often forms chains of volcanoes.
How convection currents might be the cause of plate tectonics?
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.
How convection currents are associated with plate movement?
– Collision: when two continental plates are shoved together – Subduction: when one plate plunges beneath another (Fig. 7.15) – Spreading: when two plates are pushed apart (Fig. 7.15) – Transform faulting: when two plates slide past each other (Fig. 7.15)
How does convection relate to plate tectonics?
How Does Convection Relate To Plate Tectonics? The convection currents move the plates. Where convection currents diverge near the Earth’s crust, plates move apart. Where convection currents converge, plates move towards each other. The movement of the plates, and the activity inside the Earth, is called plate tectonics .
What are convergent convective currents?
Convection currents are present in the air – A good example of convection current is the warm air that rises towards the ceiling in your house. The process happens as the warm air is said to be less dense than that of the colder air. Another good example of convection current is wind. The wind is mainly caused when the reflected radiation of