Meteors, streaks of light, flash through the sky.

Meaning: This sentence describes meteors as they enter Earth's atmosphere and create bright streaks of light that move across the sky. It's like saying, Meteors, which are small pieces of rock or metal, burn up in Earth's atmosphere and create bright lines of light that move from one side of the sky to the other.

Choice of Words: Meteors are small pieces of rock or metal that travel through space. When they enter Earth's atmosphere, they burn up and create a bright streak of light. Streaks are lines of light that are left behind by meteors. Flash means to appear suddenly and brightly. Through means to move from one side to the other of something. Sky is the space above the Earth.