Answer: one thousand birds
Chidori is an attack by Kakashi (also known as Lightning Blade). When you attack with Chidori, you can sometimes hear birds chirp.
From Quiz: The Ultimate 'Naruto' Test
Answer: Harmonia
This ending was aired from episode 26-53.
From Quiz: Opening and Ending Songs
Answer: Sannin
Sannin, literally means 3 Ninjas, the group consists of Orochimaru, Jiraiya and Tsunade.
From Quiz: "Naruto" Ninja Levels
Answer: Sharingan
The Byakugan is the advanced bloodline of the Hyuuga clan, not the Uchiha.
From Quiz: A "Naruto" Quiz - Episodes 1-23
Answer: Spring Cherry Blossom
Haruno Sakura is the female in question. "Haruno" means "Spring", as in the season in which cherry blossoms bloom. "Sakura" means "Cherry Blossom". "Field" would be translated into Japanese as "Hatake", which is Kakashi's family name. "Dolphin" is translated into Japanese as "Iruka", and "Flower of the Forest" would actually be "Hana no Ibiki", which is no one's name.
From Quiz: Original Series "Naruto" and Manga
Answer: Earth and Lightning
Sasuke exploited its Earth component during his battle against Deidara to impressive effect.
From Quiz: Particularities of the Narutoverse
Answer: Icha Icha
Kakashi Hatake is a big fan of these books, and is shown reading one of them most of the time. They are comedic (and likely adult) recounts of Jiraiya's experiences in love. They are meant for people 18 and over.
From Quiz: For Avid "Naruto" Fans
Answer: Sakura
Sakura is a extreme fangirl of Sasuke.
From Quiz: "Naruto" #1
Answer: The Bell Test
The goal was to get a bell by lunchtime. This took place in the episode "Pass or Fail? Survival Test".
From Quiz: Naruto [1]
Answer: Nine Tails
Killer Bee is the eighth. Gaara is the first. The tenth is later absorbed by Obito.
From Quiz: The Ultimate Impossible "Naruto" Quiz