A) Photosynthesis B) Nuclear fission C) Nuclear fusion D) Chemical reactions
A) Palm reading B) Oral traditions passed down through generations C) Radiometric dating of rocks and meteorites D) Analysis of cloud patterns
A) 500 million years ago B) 10,000 years ago C) 1 billion years ago D) About 4.6 billion years ago
A) Troposphere B) Exosphere C) Stratosphere D) Photosphere
A) Crust B) Mantle C) Outer core D) Inner core
A) Steady State theory B) Ptolemaic model C) Nebular hypothesis D) Big Bang theory
A) Volcanic activity B) Solar radiation C) Tidal forces D) Radioactive decay
A) Oxygen B) Helium C) Carbon D) Hydrogen
A) Inner core B) Mantle C) Crust D) Outer core |