Magnetic survey (archaeology)
Okay kiddo, imagine you have a big treasure map that shows you where gold and jewels are hidden. But the map is so old that you can't really see the markings anymore. So, to find the treasure, you need a special tool.
This tool is called a magnetic survey and it helps archaeologists to scan the ground and find things that are hidden underground. It works like a big magnet on a stick that archaeologists walk around with over the ground.
Now, you may be wondering, how can a magnet help find old things buried in the ground? Well, let's get a little sciencey here.
You know that everything around us is made of tiny, tiny things called atoms. And each atom has a little magnetic field around it (think of it like a tiny magnet). When these atoms are near each other, they can line up and make a bigger magnetic field.
Now, some materials like rocks or dirt, have lots of these tiny magnetic fields all mixed up in different directions. But, if there's something in the ground that used to be made out of metal (like an old coin or a sword), its atoms would have lined up in the same direction to make a bigger magnetic field.
When the archaeologists use their big magnet on a stick to scan the ground, it can detect the different magnetic fields and tell them where there might be something buried, like an old treasure.
So, that's how a magnetic survey helps archaeologists find things that are hidden in the ground. Pretty cool, huh?
This tool is called a magnetic survey and it helps archaeologists to scan the ground and find things that are hidden underground. It works like a big magnet on a stick that archaeologists walk around with over the ground.
Now, you may be wondering, how can a magnet help find old things buried in the ground? Well, let's get a little sciencey here.
You know that everything around us is made of tiny, tiny things called atoms. And each atom has a little magnetic field around it (think of it like a tiny magnet). When these atoms are near each other, they can line up and make a bigger magnetic field.
Now, some materials like rocks or dirt, have lots of these tiny magnetic fields all mixed up in different directions. But, if there's something in the ground that used to be made out of metal (like an old coin or a sword), its atoms would have lined up in the same direction to make a bigger magnetic field.
When the archaeologists use their big magnet on a stick to scan the ground, it can detect the different magnetic fields and tell them where there might be something buried, like an old treasure.
So, that's how a magnetic survey helps archaeologists find things that are hidden in the ground. Pretty cool, huh?