Go to the Quizzes Page Developing the Theory of Plate Tectonics 0% 982 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 1900 in 1960 2 / 20 What of the following is found in the ocean floor? ocean trench ice glacier only mid-ocean ridge plate boundaries 3 / 20 What do the shades found on the maps discovered by a sonar represent? presence of green plants different depths of the ocean ridges and ocean trenches presence of living things 4 / 20 Which is the deepest point on earth? The Mid-Atlantic ridge The Challenger Deep Iceland mid-ocean ridge Antarctica 5 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Mid- Ocean Ridge Atlantic Trench Abyssal Plain Continental Shelf 6 / 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 new fossils on Africa and South America The Discovery of radioactive isotopes The Discovery of America 7 / 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. 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. It shows how land bridges let prehistoric animals cross the oceans. 8 / 20 The .............................  is a seafloor mountain system formed by lava as it rises from cracks in the surface and cools. ocean groove mid-ocean ridge ocean trench ocean valley 9 / 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 evidence of glaciers in places now too warm fit of the continents matching rocks and mountains across 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 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. There is no relation between Marie Tharp's work and the continental drift hypothesis. Tharp’s work was the final proof to support the continental drift hypothesis. 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 used an echo sounder which sends a sound wave pulse that hits the ocean bottom. They dived in and examined the bottom of the ocean. They could easily see the ocean floor from the surface. 13 / 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. 14 / 20 What is geology? the study of rocks the study of earth the study of history the study of maps 15 / 20 Which scientist discovered mountain ranges located the ocean floor and developed the theory of seafloor spreading? Alfred Wegener Marie Tharp Isaac Newton Charles Darwin 16 / 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 17 / 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 was pregnant at the time and they thought it would be bad for her health She got seasick easily 18 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... hypothesis fact theory law 19 / 20 What is sonar? A device using sound waves to measure distance. A device to measure sound. A device that detects life. A device using UV rays. 20 / 20 The technology used to map the ocean floor from ships in 1946 was........... Sonar GPS Ocean maps Artificial intelligence Your score is 0% Restart quiz Go to the Quizzes Page