- 1. Which region of Mexico is known for its extensive underground river systems?
A) Chiapas
B) Yucatán Peninsula
C) Mexico City
D) Baja California
- 2. What is the name of the largest underground river in the Yucatán Peninsula?
A) Cenote Dos Ojos
B) Sac Actun
C) Rio Secreto
D) Cenote Ik Kil
- 3. What natural feature often indicates the presence of an underground river?
A) Mountains
B) Lakes
C) Deserts
D) Cenotes
- 4. What is the term used for the entrance to an underground river?
A) Spring
B) Cenote
C) Riverbank
D) Estuary
- 5. Which ancient civilization used cenotes for rituals and sacrifices?
A) Aztec
B) Olmec
C) Maya
D) Zapotec
- 6. Which popular tourist location features underground rivers and cenotes in the Riviera Maya?
A) Tulum
B) Xcaret
C) Coba
D) Chichen Itza
- 7. What substance primarily contributes to the acidity of rainwater affecting limestone?
A) Methane
B) Carbon dioxide
C) Sulfur dioxide
D) Ozone
- 8. In which state is the Grutas de Tolantongo located, famous for its thermal waters?
A) Veracruz
B) Guerrero
C) Hidalgo
D) Oaxaca
- 9. Which underground river is known for its stunning stalactites and stalagmites?
A) Rio Secreto
B) Cenote Samula
C) Cenote Sagrado
D) Cenote Xkeken
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