scrubber bar
The bar at the bottom of the Desktop is called the Dock. (See links below)
The bar at the bottom of Windows PC's is called a 'Taskbar'. See the related link below.
It's called a ticker.
No, the iMac has built in speakers on the bottom of the screen and a built in microphone.
X-Axis
Taskbar.
The graphic tool bar that appears at the bottom of the Windows screen is called a task bar. This is a feature that was first introduced with Windows 95.
It's iCons. i don't have the clue
Save your money a little bit at a time. When you have around $1000 you have enough to purchase an iMac. Go to the Apple website and on the left side bottom click refurbished. You will easily find an iMac for around $999 refurbished. You get the same warranty with a refurbished iMac as you do with the brand spanking new iMac.
it is called the "Dock" if you mean where the last 4 apps fit?
The original iMac was the G3 which came out in (1998). It was followed by the G4 (2002), then the G5 (2004), then the Intel iMac plastic version (2006). The 5th iMac was the aluminum iMac which came out in (August 2007), followed by the iMac Aluminum Unibody (2009). The newest iMac is simply called 2012 iMac and it came out on November 30, 2012.