Go to the Quizzes Page Developing the Theory of Plate Tectonics 0% 116 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... theory hypothesis law fact 2 / 20 Choose the correct order of discoveries that led to the overall theory of plate tectonics: continental drift - seafloor spreading - hotspots and transform boundaries formation of the continents - continental drift - mid-ocean ridge continental drift - hotspots and transform boundaries - seafloor spreading seafloor spreading - hotspots and transform boundaries - continental drift 3 / 20 Which of the following were pieces of evidence used by Alfred Wegener to support his hypothesis of Continental Drift? (choose ALL that apply) matching rocks and mountains across continents matching fossils across continents evidence of glaciers in places now too warm fit of the continents 4 / 20 What do the shades found on the maps discovered by a sonar represent? presence of green plants ridges and ocean trenches presence of living things different depths of the ocean 5 / 20 Which is the deepest point on earth? Iceland mid-ocean ridge The Mid-Atlantic ridge Antarctica The Challenger Deep 6 / 20 The .............................  is a seafloor mountain system formed by lava as it rises from cracks in the surface and cools. mid-ocean ridge ocean groove ocean valley ocean trench 7 / 20 Why was the evidence of seafloor spreading so important to the idea of Continental Drift? It disproved Alfred Wegener's hypothesis of Continental Drift. It answers the question for HOW continents could be moving. It shows how land bridges let prehistoric animals cross the oceans. A theory stating that Earth’s crust is broken up into large solid plates that move slowly 8 / 20 What discovery revived Wegener's idea of Continental Drift and eventually led to the Theory of Plate Tectonics? The Discovery of mid-ocean ridges and seafloor spreading The Discovery of radioactive isotopes The Discovery of America The Discovery of new fossils on Africa and South America 9 / 20 What did Marie Tharp's work represent for the continental drift hypothesis? Marie Tharp mapped the location of the continents on the Earth's surface. Marie Tharp measured the speed and the direction of the continents' movement. Tharp’s work was the final proof to support the continental drift hypothesis. There is no relation between Marie Tharp's work and the continental drift hypothesis. 10 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1930 in 1900 in 1910 in 1960 11 / 20 Why wasn't Marie Tharp allowed on the seagoing expeditions? They thought women brought bad luck at sea She didn't know how to swim She got seasick easily She was pregnant at the time and they thought it would be bad for her health 12 / 20 How did scientists discover the presence of mountain ranges on the ocean floor? They used a ship that captures pictures of the ocean floor. They dived in and examined the bottom of the ocean. They used an echo sounder which sends a sound wave pulse that hits the ocean bottom. They could easily see the ocean floor from the surface. 13 / 20 What of the following is found in the ocean floor? ice glacier only ocean trench mid-ocean ridge plate boundaries 14 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Atlantic Trench Abyssal Plain Mid- Ocean Ridge Continental Shelf 15 / 20 The technology used to map the ocean floor from ships in 1946 was........... Artificial intelligence GPS Sonar Ocean maps 16 / 20 Which scientist discovered mountain ranges located the ocean floor and developed the theory of seafloor spreading? Isaac Newton Alfred Wegener Marie Tharp Charles Darwin 17 / 20 What is sonar? A device using sound waves to measure distance. A device that detects life. A device using UV rays. A device to measure sound. 18 / 20 In the Atlantic ocean, where is the youngest seafloor located? Towards the edges, near the eastern and western continents. Towards the middle of the ocean at ocean ridges. Young seafloor is located randomly throughout the ocean. Towards the north and south poles. 19 / 20 What is geology? the study of earth the study of maps the study of rocks the study of history 20 / 20 How do the ages of rocks change as you get further from the Mid-Ocean ridge? Rocks get older Rocks get younger Rocks stay the same age Your score is 0% Restart quiz Go to the Quizzes Page