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Age of Sun and Earth
  • 1. What process powers the Sun's energy output?
A) Chemical reactions
B) Nuclear fusion
C) Photosynthesis
D) Nuclear fission
  • 2. What evidence supports the current understanding of the age of the Earth and the Sun?
A) Oral traditions passed down through generations
B) Analysis of cloud patterns
C) Palm reading
D) Radiometric dating of rocks and meteorites
  • 3. When did the solar system, including Earth and the Sun, form?
A) 10,000 years ago
B) About 4.6 billion years ago
C) 1 billion years ago
D) 500 million years ago
  • 4. What element is the Sun mostly composed of?
A) Carbon
B) Hydrogen
C) Oxygen
D) Helium
  • 5. What is the primary source of the Earth's internal heat?
A) Solar radiation
B) Volcanic activity
C) Tidal forces
D) Radioactive decay
  • 6. Which layer of the Sun is responsible for its visible light and heat?
A) Photosphere
B) Exosphere
C) Stratosphere
D) Troposphere
  • 7. Which layer of the Earth is divided into the lithosphere and asthenosphere?
A) Outer core
B) Crust
C) Inner core
D) Mantle
  • 8. What is the name of the theory that explains the origin of the solar system from a rotating cloud of gas and dust?
A) Steady State theory
B) Big Bang theory
C) Ptolemaic model
D) Nebular hypothesis
  • 9. What is the innermost layer of the Earth called?
A) Inner core
B) Outer core
C) Crust
D) Mantle
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