Go to the Quizzes Page Developing the Theory of Plate Tectonics 0% 913 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1910 in 1930 in 1960 in 1900 2 / 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. There is no relation between Marie Tharp's work and the continental drift hypothesis. 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. 3 / 20 What is sonar? A device to measure sound. A device using UV rays. A device that detects life. A device using sound waves to measure distance. 4 / 20 How did scientists discover the presence of mountain ranges on the ocean floor? They could easily see the ocean floor from the surface. They used an echo sounder which sends a sound wave pulse that hits the ocean bottom. They used a ship that captures pictures of the ocean floor. They dived in and examined the bottom of the ocean. 5 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Continental Shelf Atlantic Trench Abyssal Plain Mid- Ocean Ridge 6 / 20 In the Atlantic ocean, where is the youngest seafloor located? Towards the middle of the ocean at ocean ridges. Young seafloor is located randomly throughout the ocean. Towards the edges, near the eastern and western continents. Towards the north and south poles. 7 / 20 Why wasn't Marie Tharp allowed on the seagoing expeditions? She was pregnant at the time and they thought it would be bad for her health They thought women brought bad luck at sea She got seasick easily She didn't know how to swim 8 / 20 The .............................  is a seafloor mountain system formed by lava as it rises from cracks in the surface and cools. ocean valley mid-ocean ridge ocean trench ocean groove 9 / 20 How do the ages of rocks change as you get further from the Mid-Ocean ridge? Rocks get older Rocks stay the same age Rocks get younger 10 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... theory hypothesis law fact 11 / 20 What of the following is found in the ocean floor? ocean trench ice glacier only mid-ocean ridge plate boundaries 12 / 20 What do the shades found on the maps discovered by a sonar represent? presence of green plants presence of living things ridges and ocean trenches different depths of the ocean 13 / 20 What discovery revived Wegener's idea of Continental Drift and eventually led to the Theory of Plate Tectonics? The Discovery of radioactive isotopes The Discovery of America The Discovery of mid-ocean ridges and seafloor spreading The Discovery of new fossils on Africa and South America 14 / 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 fossils across continents fit of the continents evidence of glaciers in places now too warm matching rocks and mountains across continents 15 / 20 Why was the evidence of seafloor spreading so important to the idea of Continental Drift? A theory stating that Earth’s crust is broken up into large solid plates that move slowly It answers the question for HOW continents could be moving. It shows how land bridges let prehistoric animals cross the oceans. It disproved Alfred Wegener's hypothesis of Continental Drift. 16 / 20 What is geology? the study of maps the study of rocks the study of earth the study of history 17 / 20 Which scientist discovered mountain ranges located the ocean floor and developed the theory of seafloor spreading? Charles Darwin Marie Tharp Alfred Wegener Isaac Newton 18 / 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 19 / 20 The technology used to map the ocean floor from ships in 1946 was........... Sonar Ocean maps GPS Artificial intelligence 20 / 20 Which is the deepest point on earth? The Challenger Deep Iceland mid-ocean ridge The Mid-Atlantic ridge Antarctica Your score is 0% Restart quiz Go to the Quizzes Page