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This is needed to cut, tear or break something in two. A wedge can also be used to keep things together or secure things from movement. In this case, the staler is used to prevent the movement of the papers

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This is a screw in a piano seat.  The screw is really a twisted inclined plane. It allows movement from a lower position to a higher position but at the same time it moves it in a circle. This is used to adjust the height of the seat so that it is more comfortable for the user.

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This is the inside of a glue. The handle that you turn is actually a screw. It holds the nut that holds the glue vertically upright. You can see the screw once you take off the top part that holds the glue.

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this is a fork, it is considered a wedge as it can penetrate food and it can also spilt or break the food apart.

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it is a bicycle's spring suspension. the spring suspension insulates the rider from the roughness of the roads.

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this is a hole puncher. it has a pivot point when force is applied (when we press it down) the sharp end would move down and create a hole in the paper.

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this is a mechanical pencil. it has a spring which is used in order for the led to come out. a spring is used to push things apart or pull things together

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this is a watch. it has gears which are wheels with two teeth. when one gear rotates, the other one rotates too, allowing the watch's hour, minute and seconds hand move

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this is a bicycle. it has a sprocket. the sprocket has teeth which fits into the gaps of the chains. this allows the bicycle to change its speed when it moves.

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Sheryl
this is a trampoline which have coiled springs by the side to support the middle in order to make it bouncy

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Sheryl
this is a baby court that uses screws to secure certain parts of the bed together

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Sheryl
this is a correction tape which require  gears to perform its function

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Sec 1 Lesson 2 – Electronics