Find Non-blank Cell In Column Then Copy Row

Basically this is what I want to do:

1. Search a specific column (Column 21/U) for non-blank values in Worksheet 1
2. Copy the entire row containing the non-blank values
3. Paste these rows into Worksheet 2.

Repeat steps 1-3 an additional 2 times, where Worksheet 1 is always searched but one more column to the right (ex. Column 22/V) is the target column for the search, then the rows are pasted into the next Worksheet (for ex. Worksheet 3)