Which of the following statements does not use the term light-year in an appropriate way? It will take the Voyager spacecraft about 20,000 years to travel just 1 light-year A light-year is about 10 trillion kilometers. It's about 4 light-years from here to Alpha Centauri. It will take me light-years to complete this homework assignment. The Milky Way Galaxy is about 100,000 light-years in diameter.

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To determine which statement does not use the term "light-year" appropriately, let's analyze each statement:

1. **"It will take the Voyager spacecraft about 20,000 years to travel just 1 light-year."**
   - This statement is appropriate. It correctly describes the time it would take for Voyager to travel a distance of 1 light-year.

2. **"A light-year is about 10 trillion kilometers."**
   - This statement is appropriate. It accurately defines a light-year as a measure of distance.

3. **"It's about 4 light-years from here to Alpha Centauri."**
   - This statement is appropriate. It correctly uses light-years to describe the distance to Alpha Centauri.

4. **"It will take me light-years to complete this homework assignment."**
   - This statement is not appropriate. It uses "light-years" in a figurative sense to describe time, which is incorrect since a light-year is a measure of distance, not time.

5. **"The Milky Way Galaxy is about 100,000 light-years in diameter."**
   - This statement is appropriate. It correctly uses light-years to describe the diameter of the galaxy.

Based on this analysis, the statement that does not use the term "light-year" appropriately is:

**"It will take me light-years to complete this homework assignment."**
The statement "It will take me light-years to complete this homework assignment" does not use "light-year" appropriately.

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