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 trench mid-ocean ridge ocean groove ocean valley 2 / 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. 3 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... law theory fact hypothesis 4 / 20 The technology used to map the ocean floor from ships in 1946 was........... Sonar GPS Artificial intelligence Ocean maps 5 / 20 Which is the deepest point on earth? Iceland mid-ocean ridge The Challenger Deep Antarctica The Mid-Atlantic ridge 6 / 20 How do the ages of rocks change as you get further from the Mid-Ocean ridge? Rocks get younger Rocks get older Rocks stay the same age 7 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1930 in 1960 in 1910 in 1900 8 / 20 What of the following is found in the ocean floor? ice glacier only mid-ocean ridge plate boundaries ocean trench 9 / 20 Why wasn't Marie Tharp allowed on the seagoing expeditions? 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 She didn't know how to swim 10 / 20 What discovery revived Wegener's idea of Continental Drift and eventually led to the Theory of Plate Tectonics? The Discovery of radioactive isotopes The Discovery of mid-ocean ridges and seafloor spreading The Discovery of new fossils on Africa and South America The Discovery of America 11 / 20 Which scientist discovered mountain ranges located the ocean floor and developed the theory of seafloor spreading? Alfred Wegener Isaac Newton Charles Darwin Marie Tharp 12 / 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. 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. 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) matching rocks and mountains across continents fit of the continents matching fossils across continents evidence of glaciers in places now too warm 14 / 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 15 / 20 Why was the evidence of seafloor spreading so important to the idea of Continental Drift? 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 shows how land bridges let prehistoric animals cross the oceans. It answers the question for HOW continents could be moving. 16 / 20 What do the shades found on the maps discovered by a sonar represent? different depths of the ocean presence of green plants ridges and ocean trenches presence of living things 17 / 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. 18 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Mid- Ocean Ridge Atlantic Trench Continental Shelf Abyssal Plain 19 / 20 What is geology? the study of earth the study of rocks the study of maps the study of history 20 / 20 In the Atlantic ocean, where is the youngest seafloor located? Towards the north and south poles. Towards the middle of the ocean at ocean ridges. Young seafloor is located randomly throughout the ocean. Towards the edges, near the eastern and western continents. Your score is 0% Restart quiz Go to the Quizzes Page