A bomb shelter is a place where we can go to be safe from something called a bomb. A bomb is something that explodes and can be very harmful to people and buildings. A bomb shelter is kind of like a big, strong room or place where we can go to be protected from the scary boom of the bomb.
The shelter can be built underground or above ground and can be made of different materials like concrete or metal. They have special doors and walls that are very thick and can protect us from the explosion of the bomb.
When there is a threat of a bomb or an attack, people can go to the bomb shelter to be safe. Inside the shelter, there may be supplies like food, water, and blankets to help people stay comfortable while they wait for the danger to pass.
So, just like how we go into a car or a house to be safe from rain or bad weather, we go into a bomb shelter to be safe from a bad thing called a bomb.