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What Makes Earth Unique Among Planets? - Exam
Contributed by: Leonard
  • 1. What is the primary factor that allows Earth to support life?
A) Liquid water
B) Extreme temperatures
C) High levels of carbon dioxide
D) Lack of atmosphere
  • 2. Which gas makes up the majority of Earth's atmosphere?
A) Nitrogen
B) Oxygen
C) Carbon Dioxide
D) Hydrogen
  • 3. Which layer of Earth's atmosphere is closest to the surface?
A) Mesosphere
B) Troposphere
C) Stratosphere
D) Thermosphere
  • 4. What geological activity is crucial for recycling Earth's materials?
A) Solar flares
B) Magnetic reversals
C) Lunar phases
D) Plate tectonics
  • 5. What phenomenon is critical for the Earth’s weather patterns?
A) Meteor showers
B) Volcano eruptions
C) Ocean currents
D) Sea level rise
  • 6. Earth is located in which part of the solar system?
A) The asteroid belt
B) The Kuiper belt
C) The outer planets
D) The habitable zone
  • 7. What is the primary source of energy for life on Earth?
A) Nuclear energy
B) Geothermal energy
C) The Sun
D) Wind energy
  • 8. Which celestial body is Earth's main satellite?
A) Mars
B) The Moon
C) Phobos
D) Venus
  • 9. What feature is essential for Earth to maintain its temperature?
A) Dermal radiation
B) Lunar cycles
C) Greenhouse gases
D) Increased solar energy
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