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 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 2 / 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. 3 / 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 disproved Alfred Wegener's hypothesis of Continental Drift. 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 4 / 20 What do the shades found on the maps discovered by a sonar represent? presence of living things presence of green plants different depths of the ocean ridges and ocean trenches 5 / 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 6 / 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 radioactive isotopes The Discovery of mid-ocean ridges and seafloor spreading The Discovery of new fossils on Africa and South America 7 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Atlantic Trench Abyssal Plain Mid- Ocean Ridge Continental Shelf 8 / 20 What is geology? the study of history the study of maps the study of rocks the study of earth 9 / 20 In the Atlantic ocean, where is the youngest seafloor located? Towards the north and south poles. Towards the edges, near the eastern and western continents. Young seafloor is located randomly throughout the ocean. Towards the middle of the ocean at ocean ridges. 10 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... theory hypothesis fact law 11 / 20 The technology used to map the ocean floor from ships in 1946 was........... GPS Ocean maps Sonar Artificial intelligence 12 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1930 in 1900 in 1910 in 1960 13 / 20 Choose the correct order of discoveries that led to the overall theory of plate tectonics: seafloor spreading - hotspots and transform boundaries - continental drift formation of the continents - continental drift - mid-ocean ridge continental drift - hotspots and transform boundaries - seafloor spreading continental drift - seafloor spreading - hotspots and transform boundaries 14 / 20 What of the following is found in the ocean floor? mid-ocean ridge ocean trench ice glacier only plate boundaries 15 / 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 matching rocks and mountains across continents evidence of glaciers in places now too warm 16 / 20 Why wasn't Marie Tharp allowed on the seagoing expeditions? She didn't know how to swim 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 17 / 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 could easily see the ocean floor from the surface. They used a ship that captures pictures of the ocean floor. They dived in and examined the bottom of the ocean. 18 / 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. 19 / 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 20 / 20 Which is the deepest point on earth? The Challenger Deep The Mid-Atlantic ridge Antarctica Iceland mid-ocean ridge Your score is 0% Restart quiz Go to the Quizzes Page