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 How did scientists discover the presence of mountain ranges on the ocean floor? 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. They could easily see the ocean floor from the surface. 2 / 20 What is geology? the study of rocks the study of history the study of maps the study of earth 3 / 20 What of the following is found in the ocean floor? plate boundaries ice glacier only mid-ocean ridge ocean trench 4 / 20 Which is the deepest point on earth? The Challenger Deep Iceland mid-ocean ridge The Mid-Atlantic ridge Antarctica 5 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... law fact hypothesis theory 6 / 20 Choose the correct order of discoveries that led to the overall theory of plate tectonics: seafloor spreading - hotspots and transform boundaries - continental drift continental drift - seafloor spreading - hotspots and transform boundaries continental drift - hotspots and transform boundaries - seafloor spreading formation of the continents - continental drift - mid-ocean ridge 7 / 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 edges, near the eastern and western continents. Towards the middle of the ocean at ocean ridges. 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 fit of the continents matching rocks and mountains across continents matching fossils 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 America The Discovery of mid-ocean ridges and seafloor spreading The Discovery of radioactive isotopes The Discovery of new fossils on Africa and South America 10 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1910 in 1930 in 1960 in 1900 11 / 20 The technology used to map the ocean floor from ships in 1946 was........... GPS Ocean maps Artificial intelligence Sonar 12 / 20 Which scientist discovered mountain ranges located the ocean floor and developed the theory of seafloor spreading? Isaac Newton Marie Tharp Alfred Wegener Charles Darwin 13 / 20 The ............................. is a seafloor mountain system formed by lava as it rises from cracks in the surface and cools. ocean trench ocean groove ocean valley mid-ocean ridge 14 / 20 What do the shades found on the maps discovered by a sonar represent? presence of living things ridges and ocean trenches different depths of the ocean presence of green plants 15 / 20 Why wasn't Marie Tharp allowed on the seagoing expeditions? They thought women brought bad luck at sea She got seasick easily She didn't know how to swim She was pregnant at the time and they thought it would be bad for her health 16 / 20 What did Marie Tharp's work represent for the continental drift hypothesis? Marie Tharp measured the speed and the direction of the continents' movement. 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. 17 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Mid- Ocean Ridge Abyssal Plain Atlantic Trench Continental Shelf 18 / 20 What is sonar? A device using UV rays. A device that detects life. A device using sound waves to measure distance. A device to measure sound. 19 / 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. 20 / 20 How do the ages of rocks change as you get further from the Mid-Ocean ridge? Rocks stay the same age Rocks get older Rocks get younger Your score is 0% Restart quiz Go to the Quizzes Page