20. Which boss does Link do battle with in the second dungeon, the Earth Temple?
From Quiz The Legend of Zelda: Skyward Sword
Answer:
Scaldera
The Earth Temple is a dangerous area filled with lava and a host of unpleasant creatures. Through the dungeon, however, Link will meet up with his allies, the Mogmas, who will try to help him as best they can. One will let Link keep his Bomb Bag after Link retrieves it from a pair of vicious Lizalfos. This Bomb Bag is this dungeon's Key Item, and, as is tradition, is instrumental to defeating the boss, Scaldera. Scaldera, as the name might suggest, is a huge ball of lava with a rocky outer casing protecting its weak point. During the fight, Link must first stun Scaldera with bombs, and then throw one into its mouth when it prepares to spit out huge fireballs. This will rip off some of its protective casing and briefly expose its weak point for Link to slash away at. Once it is defeated, Link can access the temple's Goddess Spring, but finds that Zelda isn't there, and has moved onwards to the Lanayru Desert, and to the Temple of Time.