Wheels Inside

On Wheels day Room 19 students brought  in their bikes.

We brought in these bikes because our term concept is Movement.
We turned our bikes upside down and took notes while looking at all the different parts on a bike.

We learnt about gears, cogs, wheels, brakes and spokes.  We also learnt how every part in a bike helps the bike move and how the bike operates.

The pedals on the bike help the bike operate, every single bit on bike plays a big part to help the bike work. If a bit of the bike is missing the bike will not work properly, except for the bell.

We learnt that when you turn the pedal it makes the chain turn, which turns the cogs which causes the back wheel to turn forcing the bike to move. 

This is a mud guard it protects the rider from mud splashing up at them, but not all bikes have a mud guard.

In this picture you can see the spokes.  There are spokes on the front wheel and the back wheel.  They connect cogs to the inside of the wheel they help keep the wheel in place.

                    
 In this picture, Billy is turning the pedal.  Other people are observing how fast the wheel is going.  If you are turning the pedal, the back wheel will start spinning.  If you stop turning the pedal, the wheel will keep going but not as fast.  It will slow down eventually because there is no force applied to the wheel to power it anymore.

There is a set of cogs on the back of the bike. The cogs connect to a chain so when you change your gear the chain will jump from one cog to the next making it harder or easier to pedal the bike.

These are the brakes and chains.   They apply force to the wheels causing friction which slows the bike down.  Eventually and slowly, the bike will come to a complete halt.

By Zahna and Sinead