No, while one gear is turning the other the other gear should move the opposite direction. I learned this in robotics class.
Gears can change direction of rotational force from one axis to another. For example, a wind driven mill. The wind turns a shaft that is horizontal. That shaft turns a gear that is vertical, and the vertical gear meshes with a horizontal gear that turns a vertical shaft. Gears can change rotational speed. With a small gear meshed and turning a larger gear, the larger gear will have a slower RPM. Gears can change torque to increase or decrease available power. A small low force gear driving a larger gear will provide more rotational force.
It depends on the ratio of the number of teeth on the two gears.
It changes the direction of movement in a gear system, so that the driver and driven gears move in the same direction.
when its just two gears its rotating in the opposing direction unless both gears in question are being powered by a 3rd center gear
An idler gear is a gear which connects two other gears so they will turn in the same direction. :)
Bevel gears can be used to change the direction of drive in a gear system by 90 degrees
Cam gears are also refered to as sprockets (just another name). A chain or belt that is driven by a crankshaft gear/sprocket turns the cam gear(s)/sprocket(s). In certain high performance applications there is no chain, there are just gears meshing but that is probably not relevant to your question.
In worm gears, an axle or shafts has a screw that connects with another gear. This system is used when you need to change the direction of motion and reduce speed
opposite
A Spur gear is a gear and it can change the speed and direction of motion. You have to shift your gears in order to make your gears work. If you don't know how to, ask google or ask Wiki answers for a better answer on what to do. Remember, all gears need to be shifted at a certain period of time.
An idler gear is a gear which connects two other gears so they will turn in the same direction. :)
A third gear between them.