Characteristics

  1. What is the mass of the Earth? [answer]
  2. How much of the Earth's surface is land and how much is water? [answer]
  3. What are the highest and lowest points on Earth? [answer]
  4. What are the highest and lowest elevations in the United States? [answer]
  5. Which elements are contained in the Earth's crust? [answer]
  6. How does the temperature of the Earth change as one goes deeper underground? [answer]
  7. What is the interior of the Earth like? [answer]
  8. What are the major eras, periods, and epochs in geologic time? [answer]

Land

  1. Where are the northernmost and southernmost points of land? [answer]
  2. Do the continents move? [answer]
  3. What and where is the Continental Divide of North America? [answer]
  4. Are there tides in the solid part of the Earth as well as in its waters? [answer]
  5. How does a stalactite differ from a stalagmite? [answer]
  6. How is "speleothem" defined? [answer]
  7. What is the difference between spelunking and speleology? [answer]
  8. What causes sinkholes? [answer]
  9. Where are the world's largest deserts? [answer]
  10. How tall is a sand dune? [answer]
  11. Which natural attractions in the United States are the most popular? [answer]
  12. How long is the Grand Canyon? [answer]
  13. From what type of stone was Mount Rushmore National Monument carved? [answer]
  14. What are the LaBrea tar pits? [answer]
  15. What is the composition of the Rock of Gibraltar? [answer]

Water

  1. What is the chemical composition of the ocean? [answer]
  2. What causes waves in the ocean? [answer]
  3. Where are the world's highest tides? [answer]
  4. How deep is the ocean? [answer]
  5. What fraction of an iceberg shows above water? [answer]
  6. Why is the sea blue? [answer]
  7. How salty is seawater? [answer]
  8. What is the difference between an ocean and a sea? [answer]
  9. Where is the world's deepest Bake? [answer]
  10. Where are the five largest lakes in the world located? [answer]
  11. What are the longest rivers in the world? [answer]
  12. Who invented the ancient Chinese Earthquake detector? [answer]
  13. When did the most severe earthquake in American history occur? [answer]
  14. Of what magnitude on the Richter scale was the earthquake that hit San Francisco on April 18, 1906? [answer]
  15. How many kinds of volcanoes are there? [answer]
  16. Where is the "Circle of Fire"? [answer]
  17. Which volcanoes have been the most destructive? [answer]
  18. When did Mount St. Helens erupt? [answer]

Ice And Ice Ages

  1. How much of the Earth's surface is covered with ice? [answer]
  2. What is a moraine? [answer]
  3. How much of the Earth's surface is permanently frozen? [answer]
  4. How thick is the ice that covers Antarctica? [answer]
  5. Who was the first person on Antarctica? [answer]
  6. When was the Ice Age? [answer]
  7. If all the ice in the world were melted, how much would the oceans rise? [answer]

Mapping The Earth

  1. Who is regarded as the founder of U.S. geology? [answer]
  2. What is the prime meridian? [answer]
  3. What is Mercator's projection for maps? [answer]
  4. Which direction does a compass needle point at the north magnetic pole? [answer]
  5. What is Foucault's pendulum? [answer]
  6. Who was the first person to map the Gulf Stream? [answer]