1. Which explorer led the Spanish-funded 1492 voyage that reached the Caribbean?

• Ferdinand Magellan
• ✓ Christopher Columbus
• Leif Erikson
• Bartolomeu Dias

2. What is the most spoken language in the world by number of native speakers?

• English
• Spanish
• Hindi
• ✓ Mandarin Chinese

3. In which year did the Chernobyl nuclear disaster occur?

• 1984
• ✓ 1986
• 1988
• 1990

4. Which mathematical constant is approximately equal to 3.14159?

• Euler's number
• ✓ Pi
• Phi
• Tau

5. What is the name of the supercontinent that existed approximately 300 million years ago?

• Laurasia
• Gondwana
• ✓ Pangaea
• Panthalassa