Sparks fly upwards.
Meaning: This sentence means that when a fire is burning, small pieces of burning material are often thrown into the air and move upwards. It's like saying, When we have a campfire, we can see little sparks shooting up into the sky.
Choice of Words: Sparks are small, hot pieces of burning material that are thrown off by a fire. Fly is a verb that means to move through the air, and upwards is a direction that means towards the sky. When we put these words together, we create a sentence that describes a common occurrence when a fire is burning.
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Related Expressions