Brain Exercises – May 24, 2023

Around the World

  1. What is the largest continent on Earth?
  2. What is the most populated continent on Earth?
  3. Which is the largest sea on Earth?
  4. Which continent is the flattest?
  5. Where is the Sea of Tranquility located?
  6. What is the largest ocean in the world?
  7. Earth is not perfectly round. True or False?
  8. What percentage of Earth’s population lives in the Northern Hemisphere?
  9. Russia spans 9 time zones. True or False?
  10. Continents shift at about the same rate as your fingernails grow. True or False?
  11. California has more people than all of Canada. True or False?
  12. 10% of the world’s oxygen is supplied by the Amazon. True or False?
  13. Australia is wider than the moon. True or False?
  14. Alaska is the western-most and the eastern-most state in the US. True or False?
  15. Iceland is growing nearly 10 centimeters each year. True or False?
  16. There are a total of 15 time zones in the world. True or False?
  17. What is the only continent that spans all four hemispheres?
  18. How many countries are there in Africa?
  19. What is the largest country in Africa?
  20. The Mariana Trench is the deepest place on Earth. True or False?
  21. Some buildings in New York City have their own ZIP code. True or False?
  22. What does ZIP code stand for? When did the US begin to use ZIP codes?
  23. The Earth has enough gold to cover itself in that mineral. True or False?
  24. What is the longest river in the United States?
  25. How many days (on average) does it take a drop of water to travel the length of this river?
  26. Where is the largest rock in the world?


  1. Asia
  2. Asia, which is made up of 48 different countries.
  3. Philippine Sea at 5.7 million square kilometers
  4. Australia
  5. On the moon
  6. Pacific at 50 million square miles
  7. Earth has never been perfectly round. The planet bulges around the equator by an extra 0.3 percent because of the fact that it rotates on its axis. Earth’s diameter from North to South Pole is 12,714 kilometers (7900 miles), while through the equator it is 12,756 kilometers (7,926 miles).
  8. 90% live in the Northern Hemisphere.
  9. False. It spans 11 time zones.
  10. True
  11. True. In 2019, California had a population of 39.75 million and Canada had 37.5 million.
  12. False – it’s 20%
  13. True
  14. True. Due to the fact that it stretches so far from the west that it falls into the Eastern Hemisphere. In fact, Semisopochnoi Island, part of Alaska’s Aleutian Islands, is technically the easternmost spot in all of North America.
  15. False – it is growing 5 cm per year as the plates grow wider apart.
  16. False. There are 24.
  17. Africa. It spans the Northern, Southern, Eastern, and Western Hemispheres with 12 million square miles.
  18. 54 countries
  19. Algeria
  20. True. The deepest part of the Mariana Trench is the Challenger Deep at 35, 814 feet.
  21. True. New York City is known for its skyscrapers, and some are so epic that they have their own ZIP codes. The Empire State Building, Met Life Building, Woolworth Building and Chrysler Building are some of the buildings that boast this distinction. Size isn’t necessarily the deciding factor. Instead, the volume of mail is the primary determinant. The Empire State Building, for instance, has 150 businesses that receive mail, enough to warrant the structure a ZIP code of its own.
  22. Zone Improvement Plan which was introduced on July 1, 1963. In 1983, an extended ZIP code that added four digits was begun.
  23. True – there is still enough gold in Earth’s core to cover its entire surface with a layer 1.5 feet deep.
  24. The Mississippi
  25. 90 days (on average)
  26. Mount Augustus in Australia – Despite its name, Mount Augustus is not a mountain but one very large rock. Located in the Australian Outback, the rock stands more than 2300 feet tall and can be seen for nearly 100 miles.