Crossword Puzzle Fascinating Facts CrosswordOnline version Test your knowledge with this intriguing crossword puzzle. Just complete spaces using letters and form the correct word depending on staments. by Emely Gonzalez 1 Natural light display in the sky. 2 Large ocean wave caused by earthquakes. 3 Ancient structure with triangular sides. 4 Vast system of stars and planets. 5 Mountain that erupts with lava and ash. 6 Extinct reptile from prehistoric times. 7 Rock that enters Earth's atmosphere. 8 Celestial event where one body blocks another. 6 1 2 8 5 3 4 7 1 The long bone in the upper part of the leg 2 What is the longest river in the world? 3 The biggest country in the World 4 is a domesticated descendant of the wolf. 5 Largest continent 6 The largest organ in the body 7 Its the only planet with life 8 What is the smallest country in the world? 9 The highest mountain in the world 10 the most populated city in the world 1 5 3 9 10 7 6 4 8