ELI5: Is gravity the same everywhere?

Imagine you have a magic scale that always shows your true weight.

• If you weighed yourself at home, and then took your scale to the top of a really, really tall mountain, you'd weigh just a tiny bit less! Why?

Think of it like this:

• Imagine the Earth is a giant magnet, and you have a little metal toy.
• When the toy is close to the magnet, it's pulled strongly - that's like being at sea level, where gravity is a bit stronger.
• When the toy is farther away, the pull is weaker - that's like being on a mountain.

So, gravity isn't exactly the same everywhere. It changes a little bit depending on how far you are from the center of the Earth and how much stuff is nearby. But for everyday things like walking around, it's close enough to the same that we don't need to worry about it!