Depth is how far something goes under or inside what you see.
Imagine you have a box full of toys. When you look at it from the top, you just see the lid, but when you open it, you find more toys below. That’s like depth: it's about how much is hidden beneath the surface.
Like a Layer Cake
Like Looking into a Pond
Or think about looking at a pond on a sunny day. You see the surface, but if you look closely, you can also see fish swimming below the water, that’s depth too!
So whether it's a box of toys, a tasty cake, or a clear pond, depth is all about what’s hidden just out of sight, waiting to be discovered!
Examples
- A child measures the depth of a puddle with their hand.
- A diver counts how many feet they can go underwater.
- A tree’s roots show how deep it goes into the ground.
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See also
- What is accuracy?
- How Does Measuring Length in Centimetres Work?
- How did time become something you could count?
- How do you make more precise instruments while only using less precise instruments?
- How Does Temperature Variations with Depth Work?