5th Grade Reading Quiz
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READING INFORMATIONAL TEXT
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PASSAGE
From Ore to Object: The Journey of Aluminum
Aluminum is used in many products, from bikes to food cans. It is light, does not rust easily, and can be shaped in many ways. But aluminum does not start out as shiny metal. It begins as a rock called bauxite. The rock must go through several steps.
First, miners take bauxite out of the ground. Then factories crush it and treat it with chemicals. This pulls out a white powder called alumina. Next, workers use electricity to turn the powder into aluminum metal. This step needs a lot of energy. So plants are often built where power is cheap.
Making new aluminum takes so much power that recycling really helps. When aluminum is recycled, it can be melted and used again. It does not have to go through every early step. So recycling can save energy. It can also lower the need for new mining. And it cuts the trash sent to dumps.
Still, recycling only works when people take part. Towns need bins and pickup programs. People must sort their trash with care. A greasy can, for example, might ruin a whole batch.
The full story of aluminum shows how small choices connect to big systems. When a student drops a can in the right bin, that small act helps save resources.
What is the author's main purpose in writing this passage?
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