How does the internet actually send data across the world?

The internet sends data across the world by turning messages into tiny pieces that travel through wires and air, just like letters in a relay race.

Imagine you have a message to send to your friend who lives on the other side of the planet. Instead of sending the whole letter all at once, you break it into little pieces, like cutting up a sandwich into small bites. Each bite is called a packet. These packets then travel through different roads (like highways and streets) made of cables or wireless signals.

Each packet has an address on it, so it knows where to go. It might take one road for a while, then switch to another, kind of like changing buses in the middle of a trip. Sometimes packets even get lost or arrive out of order, but that’s okay! When they all reach their destination, they’re put back together like a puzzle.

At the end, your friend gets the whole message again, just like when you finish eating all the bites of your sandwich and it becomes whole again!