Solid fuel

Solid fuel is like a special kind of fuel that doesn't need any liquid or gas to work. It's like a big, solid block that can burn for a long time when you set it on fire.

Imagine you have a big pile of Lego blocks. If you put them together just right, you can make a tower that stays standing. Now, imagine the tower is made of a special kind of Lego that can burn. If you light it on fire, it will start to crumble and get smaller, but it will keep burning for a while.

This is what happens when you light solid fuel. It's made of special materials like charcoal, wood, or special chemicals that burn slowly and steadily. And even though it's just a solid block, it can provide heat and energy for all kinds of things.

Some people use solid fuel to heat their homes or cook food. Others use it to power rockets or launch fireworks. It's a pretty cool invention that helps us do a lot of things without needing liquid or gas fuels.