* 1. What weighs more: a liter of water or a kilogram of gold?

* 2. What is the distance from the equator to the North Pole?

* 3. What is the circumference of Earth?

* 4. What is the distance from Earth sea level to the deepest Earth ocean floor (Mariana Trench)?

* 5. What is the distance from Earth sea level to the Kármán line (boundary between Earth atmosphere and outer space)?

* 6. Scaling Earth down to globe size (100 cm in circumference) what thickness represents the greatest Earth ocean depth?

* 7. Scaling Earth down to globe size (100 cm in circumference) what thickness represents Earth atmosphere?

* 8. How long would it take you to reach the deepest ocean floor if you could ride your bike at 20 km/h straight down?

* 9. How long would it take you to reach outer space if you could ride your bike at 20 km/h straight up?

* 10. Correct Answers: 1C 2C 3C 4B 5B 6B 7C 8B 9C. Would you like to receive a complementary International System Ruler (shown at Metric Pioneer dot com) just for registering as a Metric Pioneer member?

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