Crossword Puzzle Earth ReliefOnline version Basic geographical terms of the planet's relief by ioanna ziaka 1 These occupy 30% of land surface and are surrounded by oceans and seas 2 The crust is divided into these moviing plates 3 the central line of latitude of the planet around which the tropical climatic zone lies 4 The supercontinent that existed 200 million years ago 5 the largest ocean 6 large area of flat land 7 low-lying plain with sediment deposited by a river at its mouth 8 large mass of salt water 9 The intermediate layer of planet Earth 10 the largest continent 11 land surrounded by mountains, which a river may also flow through 12 standing water occupying an inland basin 3 7 1 9 5 10 6 11 12 8