Why Do Bridges Not Fall Down? | A2 ESL Science Reading Passage

Use this A2-B1 ESL science reading passage to learn why bridges do not fall down. It includes key vocabulary, reading comprehension questions, and answers for English learners.

Bridges stay standing by spreading weight to strong supports.

Reading Level

A2-B1

Word Count

184 words

Reading Passage

A bridge lets people cross a space. Some bridges go over rivers. Some go over roads, valleys, or train tracks. A bridge must be strong enough for people, cars, buses, and sometimes trains.

Every bridge carries weight. Weight pushes down on the bridge. This push is a kind of force. If all the weight stayed in one small place, the bridge could break.

Bridges do not usually fall down because they spread weight to strong parts. These parts are called supports. Supports move the weight down into the ground. The ground is strong enough to hold a lot of force.

Different bridges use different shapes. A beam bridge uses a long strong beam. An arch bridge uses a curved shape to spread weight. A suspension bridge uses tall towers and strong cables. These shapes help the bridge carry weight safely.

Engineers design bridges carefully. They choose strong materials, such as steel and concrete. They also test the bridge before many people use it.

A bridge is a smart structure. It stays standing because its parts share weight and move force safely to the ground.

Bridge shapes and supports move weight safely to the ground.

Key Vocabulary

Word	Meaning	Example
bridge	a structure that helps people cross over water, roads, or low land	The bridge crosses the river.
weight	how heavy something is	The bridge carries the weight of cars.
force	a push or pull that can change how something moves or feels	Weight is a force that pushes down.
support	a part that holds something up	The support holds the bridge.
structure	something built from connected parts	A bridge is a strong structure.

Reading Comprehension Questions

1. What does a bridge help people do?
2. What does weight do to a bridge?
3. What do supports do?
4. What are three bridge shapes or parts mentioned in the passage?
5. Who designs bridges carefully?

Answers

1. A bridge helps people cross over water, roads, valleys, or other spaces.
2. Weight pushes down on a bridge.
3. Supports hold the bridge and move weight down into the ground.
4. Beam bridges, arch bridges, and suspension bridges are mentioned.
5. Engineers design bridges carefully.

Short Summary

Bridges stay standing because their shapes and supports spread weight and move force safely into the ground.

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