Go to the Quizzes Page Developing the Theory of Plate Tectonics 0% 117 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 20 How do the ages of rocks change as you get further from the Mid-Ocean ridge? Rocks stay the same age Rocks get younger Rocks get older 2 / 20 Which is the deepest point on earth? The Mid-Atlantic ridge Iceland mid-ocean ridge The Challenger Deep Antarctica 3 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... law fact theory hypothesis 4 / 20 In the Atlantic ocean, where is the youngest seafloor located? Towards the edges, near the eastern and western continents. Young seafloor is located randomly throughout the ocean. Towards the north and south poles. Towards the middle of the ocean at ocean ridges. 5 / 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 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. 6 / 20 What do the shades found on the maps discovered by a sonar represent? presence of green plants ridges and ocean trenches different depths of the ocean presence of living things 7 / 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 matching rocks and mountains across continents fit of the continents 8 / 20 The technology used to map the ocean floor from ships in 1946 was........... Artificial intelligence Sonar GPS Ocean maps 9 / 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 10 / 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. 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. 11 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Mid- Ocean Ridge Continental Shelf Atlantic Trench Abyssal Plain 12 / 20 What is sonar? A device that detects life. A device using sound waves to measure distance. A device to measure sound. A device using UV rays. 13 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1910 in 1900 in 1930 in 1960 14 / 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 got seasick easily She was pregnant at the time and they thought it would be bad for her health 15 / 20 What is geology? the study of earth the study of history the study of maps the study of rocks 16 / 20 What of the following is found in the ocean floor? mid-ocean ridge ice glacier only plate boundaries ocean trench 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 continental drift - hotspots and transform boundaries - seafloor spreading formation of the continents - continental drift - mid-ocean ridge seafloor spreading - hotspots and transform boundaries - continental drift 18 / 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 valley ocean trench 19 / 20 Why was the evidence of seafloor spreading so important to the idea of Continental Drift? It shows how land bridges let prehistoric animals cross the oceans. It disproved Alfred Wegener's hypothesis 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 20 / 20 Which scientist discovered mountain ranges located the ocean floor and developed the theory of seafloor spreading? Marie Tharp Charles Darwin Alfred Wegener Isaac Newton Your score is 0% Restart quiz Go to the Quizzes Page