Go to the Quizzes Page Developing the Theory of Plate Tectonics 0% 327 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 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 It disproved Alfred Wegener's hypothesis of Continental Drift. 2 / 20 What do the shades found on the maps discovered by a sonar represent? presence of living things different depths of the ocean presence of green plants ridges and ocean trenches 3 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... fact theory hypothesis law 4 / 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 - seafloor spreading - hotspots and transform boundaries continental drift - hotspots and transform boundaries - seafloor spreading seafloor spreading - hotspots and transform boundaries - continental drift 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 What is sonar? A device that detects life. A device using UV rays. A device to measure sound. A device using sound waves to measure distance. 7 / 20 What of the following is found in the ocean floor? mid-ocean ridge plate boundaries ice glacier only ocean trench 8 / 20 The technology used to map the ocean floor from ships in 1946 was........... Artificial intelligence Sonar Ocean maps GPS 9 / 20 In the Atlantic ocean, where is the youngest seafloor located? Young seafloor is located randomly throughout the ocean. Towards the north and south poles. Towards the middle of the ocean at ocean ridges. Towards the edges, near the eastern and western continents. 10 / 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 11 / 20 Which scientist discovered mountain ranges located the ocean floor and developed the theory of seafloor spreading? Charles Darwin Alfred Wegener Isaac Newton Marie Tharp 12 / 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 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 used a ship that captures pictures of the ocean floor. 13 / 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 fit of the continents matching fossils across continents matching rocks and mountains across continents 14 / 20 What did Marie Tharp's work represent for the continental drift hypothesis? 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 mapped the location of the continents on the Earth's surface. Marie Tharp measured the speed and the direction of the continents' movement. 15 / 20 The deepest part of the ocean floor is... Abyssal Plain Oceanic Trench Oceanic Ridge 16 / 20 What is geology? the study of maps the study of earth the study of rocks the study of history 17 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1900 in 1930 in 1960 in 1910 18 / 20 The .............................  is a seafloor mountain system formed by lava as it rises from cracks in the surface and cools. ocean groove ocean valley ocean trench mid-ocean ridge 19 / 20 Why wasn't Marie Tharp allowed on the seagoing expeditions? She got seasick easily They thought women brought bad luck at sea She didn't know how to swim She was pregnant at the time and they thought it would be bad for her health 20 / 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 new fossils on Africa and South America The Discovery of America Your score is 0% Restart quiz Go to the Quizzes Page