Simplify the following text for a Grade 6 native English-speaking person.
Original: The word `` tropic '' itself comes from the Greek tropos , meaning turn , referring to the fact that the sun appears to `` turn back '' at the solstices .
Simplified: The word `` tropic '' comes from the Greek tropos , meaning turn . This refers to the fact that the sun appears to `` turn back '' at the solstices .