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 Which is the deepest point on earth? Iceland mid-ocean ridge The Mid-Atlantic ridge Antarctica The Challenger Deep 2 / 20 What is sonar? A device using sound waves to measure distance. A device using UV rays. A device that detects life. A device to measure sound. 3 / 20 Which scientist discovered mountain ranges located the ocean floor and developed the theory of seafloor spreading? Isaac Newton Charles Darwin Marie Tharp Alfred Wegener 4 / 20 What of the following is found in the ocean floor? ocean trench mid-ocean ridge ice glacier only plate boundaries 5 / 20 When did scientists suggested that mid-ocean ridges were created by seafloor spreading? in 1930 in 1900 in 1960 in 1910 6 / 20 Why wasn't Marie Tharp allowed on the seagoing expeditions? 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 They thought women brought bad luck at sea 7 / 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 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. 8 / 20 Wegener's idea that Pangaea separated into continents became the continental drift .................... hypothesis theory law fact 9 / 20 What is geology? the study of history the study of maps the study of earth the study of rocks 10 / 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 valley ocean groove 11 / 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 12 / 20 What discovery revived Wegener's idea of Continental Drift and eventually led to the Theory of Plate Tectonics? The Discovery of new fossils on Africa and South America The Discovery of radioactive isotopes The Discovery of mid-ocean ridges and seafloor spreading The Discovery of America 13 / 20 The submarine mountain range running through the Atlantic Ocean is called the... Mid- Ocean Ridge Continental Shelf Atlantic Trench Abyssal Plain 14 / 20 The technology used to map the ocean floor from ships in 1946 was........... Sonar Ocean maps Artificial intelligence GPS 15 / 20 What did Marie Tharp's work represent for 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. 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. 16 / 20 Choose the correct order of discoveries that led to the overall theory of plate tectonics: formation of the continents - continental drift - mid-ocean ridge continental drift - seafloor spreading - hotspots and transform boundaries seafloor spreading - hotspots and transform boundaries - continental drift continental drift - hotspots and transform boundaries - seafloor spreading 17 / 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. 18 / 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 shows how land bridges let prehistoric animals cross the oceans. It disproved Alfred Wegener's hypothesis of Continental Drift. 19 / 20 What do the shades found on the maps discovered by a sonar represent? presence of green plants different depths of the ocean ridges and ocean trenches presence of living things 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