An arc is a simple curved shape. It looks like part of a circle or bow. You see arcs in many places, like rainbows or drawings.
The rainbow is an arc in the sky.
He drew an arc on the paper.
An electric arc is like a bright spark that jumps between parts of a machine. It can give off light and heat and is used in welding and lighting.
The electric arc lights up the room.
An arc happens between the wires.
In stories, an arc is the main path or change a character or plot goes through. It helps tell the story step by step with changes over time.
This season has a great story arc.
The character's arc is very clear.
An arc in buildings is a curved piece like an arch. It helps support the weight above doors or bridges and is strong and stable.
The bridge has a strong arc.
The door has a beautiful arc.
In electronics, an arc is a quick, bright flash inside a device caused by electricity jumping gaps. It is important in old equipment and some lights.
The tube shows a small arc during operation.
Voltage causes an arc inside the device.
