Earth QuizTheLastDialogue EARTH QUIZ Test Your Knowledge Of The Earth With These Quizzes Earth Online Quiz for Kids and Adults #1. What is the age of Earth? 6000 Years 4,500,000,000 Years 12,000 Years 4,000,000,000 Years 5,000,000,000 Years Work Harder #2. In Earth’s anatomy which one is the smallest part of the earth? Inner Core Crust Outer Core Mantle Work Harder #3. What is the name of upper most layer of Earth? Inner Core Outer Core Mantle Crust Work Harder Previous Finish Results Well Done. You Are Roaring Like A Lion Keep Working. Slow & Steady Wins The Race START NEW