No, the Wii cannot play Wii U games. It's actually the opposite - the Wii U can play Wii games.
The Wii U is a different console to the Wii. The Wii U however is compatible with Wii games and accessories.
The Wii U is compatible with Wii games. There is no difference in the disk sizes. (Be aware that the Wii U does not support Gamecube games.)
No. It is a completely new console that is a successor to the Wii. However, it is fully backwards compatible with Wii games, Wii downloads, and Wii controllers.
Of course not they are both completely different consoles. I know 3DS is compatible with the DS. And the Wii is compatible with the gamecube. The DS is a handheld and the Wii U is a home console. Hand held and Home console does not mix. The wii u looks as it plays hand held games but it's a home console. The Wii U console needs to stream games to the controller.
The wii-u console does not come with the wii console but you can play wii games on the wii-u
No, the Nintendo Wii U can be powered on without a gamepad and a Wii remote can be used to open applications and games on the Wii U. However, it is strongly recommended to have the Gamepad because all Wii U games are compatible with the gamepad, but not all Wii U games are compatible with the Wii remote and classic controllers
Yes, the Wii U console can play Wii U games
Yes, the Wii U is fully backward compatible with Wii games, Wii downloads, purchased WiiWare and Virtual Console games and has the Wii Menu built into it. However, Wii games cannot be controlled with the Wii U GamePad and will not be displayed in HD on the Wii U console. Also, GameCube Contollers will not work on the Wii U even if the Wii game allows the use of GameCube Contollers. There are GameCube Controller Adapters (Mayflash) that were created that the GameCube controller to function like the Wii Classic Controller, but is not an official product of Nintendo.
No, the Nintendo Wii cannot play Wii U games
No. Gamecube game were compatible with the Wii but they're no longer compatible with the Wii U. Wii games are however still compatible with the Wii U.
Wii U games cannot be played on the Wii.
The Wii U virtual console will be available later in 2013, although virtual console games have started to be released on the eShop as a promotion. As well, virtual console games can be bought from the Wii Shop and played from within the Wii Menu. When these games launch on the Wii U's eShop, you can upgrade any Wii Virtual Console titles you own to the Wii U version at a price. (Currently $1 for NES games, $1.50 for SNES games.)