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 Why was the evidence of seafloor spreading so important to the idea of Continental Drift? It shows how land bridges let prehistoric animals cross the oceans. It disproved Alfred Wegener's hypothesis 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. 2 / 20 Which is the deepest point on earth? The Challenger Deep Antarctica Iceland mid-ocean ridge The Mid-Atlantic ridge 3 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1930 in 1910 in 1900 in 1960 4 / 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 5 / 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. 6 / 20 Which scientist discovered mountain ranges located the ocean floor and developed the theory of seafloor spreading? Isaac Newton Marie Tharp Charles Darwin Alfred Wegener 7 / 20 Choose the correct order of discoveries that led to the overall theory of plate tectonics: 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 continental drift - seafloor spreading - hotspots and transform boundaries 8 / 20 Which of the following were pieces of evidence used by Alfred Wegener to support his hypothesis of Continental Drift? (choose ALL that apply) evidence of glaciers in places now too warm matching fossils across continents fit of the continents matching rocks and mountains across continents 9 / 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 10 / 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. 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. Marie Tharp measured the speed and the direction of the continents' movement. 11 / 20 What is geology? the study of history the study of earth the study of maps the study of rocks 12 / 20 What of the following is found in the ocean floor? ocean trench ice glacier only plate boundaries mid-ocean ridge 13 / 20 Why wasn't Marie Tharp allowed on the seagoing expeditions? She didn't know how to swim They thought women brought bad luck at sea She got seasick easily She was pregnant at the time and they thought it would be bad for her health 14 / 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 15 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... theory fact hypothesis law 16 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Mid- Ocean Ridge Continental Shelf Abyssal Plain Atlantic Trench 17 / 20 The technology used to map the ocean floor from ships in 1946 was........... Artificial intelligence GPS Ocean maps Sonar 18 / 20 In the Atlantic ocean, where is the youngest seafloor located? Towards the middle of the ocean at ocean ridges. Towards the north and south poles. Young seafloor is located randomly throughout the ocean. Towards the edges, near the eastern and western continents. 19 / 20 What is sonar? A device that detects life. A device using sound waves to measure distance. A device using UV rays. A device to measure sound. 20 / 20 The .............................  is a seafloor mountain system formed by lava as it rises from cracks in the surface and cools. mid-ocean ridge ocean trench ocean valley ocean groove Your score is 0% Restart quiz Go to the Quizzes Page