My alcoholic father’s hands always shake.
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means earthquake so the verb means to shiver and to shake, like you would if there was an earthquake happening right now.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
You start to shake in an earthquake because you're really full (ふる) from eating lunch. Now your full belly is shaking and quaking with the ground! Ahh it's awful! You never want to be full again!