How they move
The crust is constantly moving because of the convection of the mantle. The mantle is constantly swirling and moving from the top to the bottom, as it nears the outer crust, the already hot mantle gets even hotter as the tempatures increase. That keeps the mantle liquid.
How fast they move:
The rate of spreading along the Mid-Atlantic Ridge
averages about 2.5 centimeters per year (cm/yr), or 25 km in a million
years.
Eurasian plate:
The Eurasians plate moves roughly 0.95
cm/yr.
African plate:
The African plate's speed is estimated at around 2.15 cm
(0.85 in) per year.
Australian plate:
The Australian plate moves about 6 cm a
year.
Nazca plate:
The eastward-moving and denser Nazca plate is sub ducting
under the western edge of the South American along the pacific cost of the
continent at arte of 77 mm per year.
Pacific plate:
The Pacific plate is moving north-west at a rate that
increases from 6.6 cm per year.
Antarctic plate:
The Antarctic plate movement is estimated at least 1cm /
per year toward the Atlantic Ocean.
North American:
The north American plate is estimated a motion which is
52 mm/yr.
The crust is constantly moving because of the convection of the mantle. The mantle is constantly swirling and moving from the top to the bottom, as it nears the outer crust, the already hot mantle gets even hotter as the tempatures increase. That keeps the mantle liquid.
How fast they move:
The rate of spreading along the Mid-Atlantic Ridge
averages about 2.5 centimeters per year (cm/yr), or 25 km in a million
years.
Eurasian plate:
The Eurasians plate moves roughly 0.95
cm/yr.
African plate:
The African plate's speed is estimated at around 2.15 cm
(0.85 in) per year.
Australian plate:
The Australian plate moves about 6 cm a
year.
Nazca plate:
The eastward-moving and denser Nazca plate is sub ducting
under the western edge of the South American along the pacific cost of the
continent at arte of 77 mm per year.
Pacific plate:
The Pacific plate is moving north-west at a rate that
increases from 6.6 cm per year.
Antarctic plate:
The Antarctic plate movement is estimated at least 1cm /
per year toward the Atlantic Ocean.
North American:
The north American plate is estimated a motion which is
52 mm/yr.