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# Grade & Section: ## Directions: Choose the letter of the best answer. Write the letter before each number. 1. The idea proposed by Alfred Wegener to explain the continental shapes and positions is known as _______. - A. Pangaea - B. Elastic Rebound - C. Plate Tectonics - D. Contin...

# Grade & Section: ## Directions: Choose the letter of the best answer. Write the letter before each number. 1. The idea proposed by Alfred Wegener to explain the continental shapes and positions is known as _______. - A. Pangaea - B. Elastic Rebound - C. Plate Tectonics - D. Continental Drift 2. When a volcanic eruption spews gases and ash into the air, which two spheres are interacting? - A. hydrosphere and geosphere - B. biosphere and geosphere - C. geosphere and atmosphere - D. biosphere and atmosphere 3. According to the Continental Drift Theory, the Earth was one big supercontinent called: - A. Gondwana - B. Pangaea - C. Laurasua - D. Panthalassa 4. When Earth's crust bends, forces act towards each other, this phenomenon may result to: - A. earthquake - B. folding - C. tsunami - D. faulting 5. When the Earth's crust cracks and tension forms or develops, this phenomenon is called: - A. earthquake - B. folding - C. tsunami - D. faulting 6. The supercontinent called Pangaea was believed to exist _____ million years ago. - A. 120 - B. 100 - C. 200 - D. 300 7. The Earth is estimated to be around 4.6 billion years old, this data was based from: - A. the presence of heat in the earth's core - B. record of earthquake on Earth - C. the amount of gases in the atmosphere - D. rock and fossils record 8. 80% of all earthquakes occur in the ______. - A. Atlantic Belt - B. Caribbean Belt - C. Mediterranean-Asiatic Belt - D. Pacific Belt 9. This explains the concept of earthquake, where rocks bend until the strength of the rock is exceeded and rupture occurs. - A. Sea-floor Spreading - B. Elastic Rebound - C. Plate Tectonics - D. Continental Drift 10. Tsunamis are big waves that are caused by: - A. Strong winds - B. Cyclones - C. earthquake or volcano eruption on land - D. underwater earthquake or volcanic eruption 11. These are push and pull waves that expand in the direction the waves travel; has the greatest velocity of all earthquake waves. - A. P waves - B. S waves - C. Love waves - D. Rayleigh waves