Final answer:
To determine how many more kilometers wider the penguin area will be after being expanded by 500 meters, divide 500 by 1,000 to get 0.5 kilometers.
Step-by-step explanation:
To determine how many more kilometers wider the penguin area will be after being expanded by 500 meters, we need to convert the width from meters to kilometers. There are 1,000 meters in a kilometer, so the expansion is 500 meters divided by 1,000, which gives us 0.5 kilometers.
Therefore, the penguin area will be 0.5 kilometers wider after the expansion.