What is a light year?
Answer and explanation
Correct answer: D. The distance light travels in one year
- Step 1: A light year is a unit of distance.
- Step 2: It is the distance travelled by light in one year.
Answer
The distance light travels in one year.
Why not the others: The time light takes to reach the Sun: this is a time, not a distance. The speed of light in a year: speed is not measured in years. The age of a star: this is a time scale.
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More Space and Electricity questions
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