Go to the Quizzes Page Developing the Theory of Plate Tectonics 0% 267 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 valley ocean groove mid-ocean ridge ocean trench 2 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1900 in 1910 in 1930 in 1960 3 / 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 4 / 20 Why wasn't Marie Tharp allowed on the seagoing expeditions? She didn't know how to swim 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 5 / 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 matching rocks and mountains across continents matching fossils across continents fit of the continents 6 / 20 What is sonar? A device using UV rays. A device using sound waves to measure distance. A device that detects life. A device to measure sound. 7 / 20 The technology used to map the ocean floor from ships in 1946 was........... Ocean maps Artificial intelligence Sonar GPS 8 / 20 How do the ages of rocks change as you get further from the Mid-Ocean ridge? Rocks get younger Rocks stay the same age Rocks get older 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. Towards the middle of the ocean at ocean ridges. Young seafloor is located randomly throughout the ocean. 10 / 20 What is geology? the study of history the study of rocks the study of maps the study of earth 11 / 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 12 / 20 Why was the evidence of seafloor spreading so important to the idea of Continental Drift? A theory stating that Earth’s crust is broken up into large solid plates that move slowly 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. 13 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... theory hypothesis fact law 14 / 20 How did scientists discover the presence of mountain ranges on the ocean floor? They dived in and examined the bottom of the ocean. They could easily see the ocean floor from the surface. 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. 15 / 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 16 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Mid- Ocean Ridge Atlantic Trench Abyssal Plain Continental Shelf 17 / 20 Choose the correct order of discoveries that led to the overall theory of plate tectonics: continental drift - seafloor spreading - hotspots and transform boundaries formation of the continents - continental drift - mid-ocean ridge continental drift - hotspots and transform boundaries - seafloor spreading seafloor spreading - hotspots and transform boundaries - continental drift 18 / 20 What of the following is found in the ocean floor? ocean trench ice glacier only mid-ocean ridge plate boundaries 19 / 20 Which is the deepest point on earth? The Challenger Deep Iceland mid-ocean ridge The Mid-Atlantic ridge Antarctica 20 / 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. 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. Your score is 0% Restart quiz Go to the Quizzes Page