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Read the Following Selection
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To demolish a building means to tear it down. (Say demolish like this: duh-maw-lish.) Most of the time, people demolish old buildings.
Why Do People Demolish Old Buildings?
Sometimes, an old building is not strong anymore. It is not safe for people. Other times, people want to put up a tall building in a place where there is no empty land. They tear down an old building so they can build a new one.
How Do People Demolish Buildings?
In the past, people often used a wrecking ball to tear down a building. A wrecking ball is a very heavy ball of metal that hangs from a tall crane. The ball swings into the building over and over again. Bit by bit, the building falls apart. This way of demolishing a building creates lots of noise and dust. A wrecking ball does not work well if the building is taller than the crane.
Today, people often use dynamite to demolish a very tall building. They put dynamite all around the inside of the building. Then they make the dynamite explode. The building falls down in just a few seconds. This way is much faster than using a wrecking ball, but it also creates lots of noise and dust.
Saving Old Buildings
People often try to save old buildings that others want to demolish. They don’t want to lose all the old buildings in their community. They might ask the people who run the city to stop an old building from being torn down. Sometimes an old building is saved, and sometimes it is torn down to make space for a new one.
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1. What do people often use to tear down very tall buildings today?CorrectIncorrect
2. Why do people sometimes try to save old buildings?CorrectIncorrect
A cause is something that makes something happen. It answers the question “why did this happen.”
An effect is what happened as a result of the cause. It answers the question “what happened.”
3. Which sentence tells the cause? Which sentence tells the effect? Drag each sentence to the correct spot.
- There is no empty land to build a new building.
- People demolish a building and build a new one.
3. Choose each piece of information that is true about wrecking balls and dynamite.CorrectIncorrect
5. Choose if the following statement is a fact or opinion: To demolish a building means to tear it down.CorrectIncorrect