Wedge facts for kids
A wedge is a simple tool or a shape that can be used for many different things. It's often used to push two things apart, to split something, or to hold things tightly in place. Think of it like a ramp that moves!
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Wedges as Simple Machines
One of the most common ways we use a wedge is as a simple machine. A simple machine is a basic tool that changes the direction or strength of a force. Wedges are very useful because they can make a small push create a much larger force.
How a Mechanical Wedge Works
A mechanical wedge has at least one sloped surface. When you push the thick end of the wedge, the sloped sides push against an object. This action forces the object to split, separate, or lift. The sharper the wedge, the easier it is to split or separate things.
Examples of Wedges
You use wedges every day without even knowing it!
- Knives and Axes: These tools have sharp, wedge-shaped blades that cut through food or wood. When you push down on a knife, its wedge shape forces the material apart.
- Doorstops: A doorstop is a wedge that holds a door open. You push it under the door, and its shape creates friction, keeping the door from moving.
- Nails: The pointy end of a nail is a wedge. When you hammer a nail into wood, the wedge-shaped tip pushes the wood fibers apart, allowing the nail to go in.
- Zippers: The slider on a zipper is a small wedge. It pushes the teeth together or pulls them apart.
- Plows: Farmers use plows with large wedge-shaped blades to turn over soil in fields.
Other Kinds of Wedges
The word "wedge" can also mean other things that aren't simple machines.
Wedge in Star Wars
Wedge Antilles is a brave character in the famous Star Wars films. He is a skilled pilot who fought against the evil Galactic Empire. He was one of the few pilots to survive both attacks on the Death Star.
The Wedge Hairstyle
A "wedge hairstyle" is a type of haircut. It became popular in the 1970s, especially after the American figure skater Dorothy Hamill wore it. This hairstyle is short and layered, creating a triangular or "wedge" shape at the back.
Images for kids
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A wood splitting wedge
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A flint hand axe found in Winchester, an early example of a wedge tool.
See also
In Spanish: Cuña (máquina) para niños
