Final answer:
In the given sentence, the words 'Called', 'Uncle Larry', and 'Topeka' should be capitalized. The complete and corrected sentence should be, 'I called Uncle Larry who lives north of Topeka after hearing a tornado struck his area.'
Step-by-step explanation:
The words in the sentence that should be capitalized are 'Called', 'Uncle Larry', 'North', 'Topeka', and the pronoun 'I' as it is missing from the sentence. The correct version of the sentence would be, 'Called Uncle Larry who lives North of Topeka after hearing a tornado struck his area.' However, this sentence seems to lack a subject and may need to start with 'I called' to be grammatically correct, and the word 'North' is a direction and not a proper noun in this context, so it should not be capitalized. Thus, the fully corrected version is: 'I called Uncle Larry who lives north of Topeka after hearing a tornado struck his area.'