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They are the solid crustal rock floating on the top of a mantle convection cell. They formed the same way slag forms on the tops of convection cells in the molten metal in a smelter furnace. Sections of the mantle also float on the tops of convection cells in the molten metal of the liquid core.
If you want to watch the tops of some convection cells form and move, get a cup of some hot drink (e.g. coffee or tea) and let it sit undisturbed for a minute or so to let all currents but convection currents stop. When you look at the surface of the hot drink it will be covered in very tiny polygons. These polygons are the tops of convection cells in the drink, don't they look something like a miniature map of crustal plates? Watch as they expand, contract, and move about.
What else can I help you with?
What are the crustal plate?
The seven crustal plates are African Plate, Antarctic Plate, Australian Plate, Eurasian Plate, North American Plate, South American Plate, and Pacific Plate.
What is irelands crustal plate?
the eurasian plate
What crustal plate is Russia on?
eurasian plate
Which crustal plate can be found between nazca plate and south American plate?
The crustal plate found between the Nazca Plate and the South American Plate is the Antarctic Plate.
What is the evidence for the existence of crustal plates?
Worldwide, the mountains are the evidence of crustal plates.
What are the seven major crustal plates?
1. Pacific Plate2. North American plate3. South American Plate4.African Plate5. Eurasian plate6. Australian plateand last but not least7. Antarctic plate
What crustal plate is Panama located on?
Caribbean Plate
When is the last movement of the crustal plate?
The crustal plates are in constant motion, there is no last movement
Hawaii is located on what crustal plate?
Hawaii is located on the Pacific Plate.
Why asked her crustal plate?
your question is unrelevant
What is Crustal plate down under?
Tectonics
What is the crustal plate 'down under'?
Tectonics
