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Solids

Glaciers are very large solid objects formed of frozen water
Glaciers are very large solid objects formed of frozen water
Credit: Wikimedia Commons. Click here for the license
The wooden trunk of a tree is made by the tree as it grows from taking carbon dioxide from the air and water from the ground and using light to turn them into wood, oxygen, and glucose (sugar), which is a kind of food for trees.
The wooden trunk of a tree is made by the tree as it grows from taking carbon dioxide from the air and water from the ground and using light to turn them into wood, oxygen, and glucose (sugar), which is a kind of food for trees.
Credit: Wikimedia Commons. Click here for the license

Solids are things you can hold. They keep their own shape.

A rock is a solid, and so is an ice cube, your desk, or a book.

How to identify:

It has a fixed shape that doesn't change, even if you move it.

💡 Fun Facts

  • Solids always take up the same amount of space (they have a fixed volume).
  • The tiny particles (called atoms) inside a solid are packed very tightly together and just vibrate on the spot.
  • Even something soft like a sponge or a teddy bear is a solid—it doesn't flow like water. A cushion or soft toy can change shape and size because its made of a solid that is woven and is mostly full of air.
  • Water is actually a very pale blue. It's so pale you can't tell by looking through a glass of water, but when you see a frozen glacier that is made of thick frozen water, the blue colour is quite striking.