Quick Answer: How Do Convection Currents Affect Tectonic Plates?

How fast do tectonic plates move?

They move at a rate of one to two inches (three to five centimeters) per year..

What are the 4 types of tectonic plate movement?

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.

What is the strongest driving force of plate tectonics?

Recent research has shown that the major driving force for most plate movement is slab pull, because the plates with more of their edges being subducted are the faster-moving ones. However ridge push is also presented in recent research to be a force that drives the movement of plates.

How deep are the tectonic plates?

The crust beneath the continents, however, is much more variable in thickness, averaging about 30 kilometers (18.6 miles); under large mountain ranges it can extend to depths of up to 100 kilometers (62.1 miles). The San Andreas fault is the border between two tectonic plates—the North American Plate and Pacific Plate.

How does the convection currents move tectonic plates?

The crust moves because of movements deep inside the earth. Heat rising and falling inside the mantle creates convection currents generated by radioactive decay in the core. The convection currents move the plates. Where convection currents diverge near the Earth’s crust, plates move apart.

What do convection currents cause?

Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.

How do convection currents affect weather?

During convection, cooler water or air sinks, and warmer water or air rises. This movement causes currents. … These currents move water all around the earth, bringing warm water to cooler areas and vice versa. This redistributes thermal energy and causes changes in the weather.

How do plate tectonics affect ocean currents?

plate tectonics causes a change in the ocean currents and in turn generates more heat. when tectonic plates shift, the creation of the volcanic eruptions increases the degree of carbon dioxide and sulfur dioxide in the atmosphere. … climate is adversely affected by tectonic plates moving and creating smaller land areas.

What are 4 examples of convection?

Examples of ConvectionBoiling water – The heat passes from the burner into the pot, heating the water at the bottom. … Radiator – Puts warm air out at the top and draws in cooler air at the bottom.Steaming cup of hot tea – The steam is showing heat being transfered into the air.Ice melting – Heat moves to the ice from the air.More items…

What causes the tectonic plates to move?

Tectonic plates are able to move because the Earth’s lithosphere has greater mechanical strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection; that is, the slow creeping motion of Earth’s solid mantle.