Question

drag and drop the words or phrases that accurately complete the paragraph.
when trying to understand the relative distances between planets, moons, or the sun, scientists have to consider the relative size of each of these astronomical bodies. the □ of an object allows you to determine how large objects are when compared to an object of known size. the distances between objects in the solar system are measured in □. distances outside our galaxy are measured in □.
astronomical bodies astronomical units light years relative distance
relative size kilometers

Explanation:

• First blank: "relative size" makes sense as it directly relates to determining an object's size compared to a known - sized object.
• Second blank: "astronomical units" are the standard unit for measuring distances within the solar system.
• Third blank: "light years" are used for measuring extremely large distances outside our galaxy.

Answer:

1. relative size
2. astronomical units
3. light years