Hop on, pedal, and zoom away! When you push your foot down on a bike pedal, the pedal turns a large front sprocket. The sprocket is a wheel with teeth sticking out of it. The teeth fit into, or “mesh,” with the bike chain. The sprocket is called the chainwheel because it “drives” the chain. The chain moves a smaller sprocket on the back wheel. Every time you push on the pedal, the back wheel moves around two or three times.
The larger the sprocket, the lower the gear. The smaller the sprocket, the higher the gear. A low gear makes it easier to pedal. It is used for pedaling uphill or against the wind.
Some bikes have many gears. A high gear lets you pedal slowly but move the bike a long way.
Imagine pedaling a bike while you sit in a chair with your legs straight out in front of you. This is how you ride a recumbent bike. Some recumbent bikes have no handlebars. You steer with levers beneath the seat.
Unicycle
Uni means “one”. A unicycle has only one wheel. It takes great balance to ride a unicycle. You need to keep yourself steady, seated above the wheel. But you also need to steer using the pedals and leaning your body slightly to the left or right.
Picture Credit : Google
