A new model explaining this mysterious process suggests the core was created as dribs and drabs of iron percolated inward from Earth's lower mantle, according to a study published Oct. 6 in the journal Nature Geoscience. The mantle is the viscous, rocky layer between the crust and Earth's iron core.
Definition of flash card. : a card bearing words, numbers, or pictures that is briefly displayed (as by a teacher to a class) usually as a learning aid.
Who invented Card Games? Many people are involved in the invention of card games. The origin of card games was from China since 1370. Earlier paper was invented by Chinese and after the paper invention they invented the idea of playing cards. When was the Card Games invented? 1370. When the patent was granted on the Card Games? Garfield applied for a patent in 1995 for his novel card game method of play and finally he was granted a patent in 1997. Who was the patent granted to on the Card Games? Garfield. What is a Card Game? Card game is a game played with cards. There are different types of methods for playing card games.