1. The shape of the earth is   Conical   Spherical   Cubical   Flat   Hint Half-n-half Clue   2. What are metal bearing rocks called?   Bitumen   Slag   Metalloids   Ores   Half-n-half Clue   3. Which of the following is a main component of common glass?   Marble   Water   Sand   Powdered Mica   Half-n-half Clue   4. The length of the days and nights is equal at the   Equator   South Pole   Tropic of Capricorn   North Pole   Half-n-half Clue   5. Removal of the top layer of soil/rocks by wind, water is known as   Detoxification   Desalination   Corrosion   Erosion   Half-n-half Clue   6. Coal is formed from   Lava   Rocks   Organic Matter   Soil   Half-n-half Clue   7. Natural hot water springs occurring in New Zealand, Italy and Iceland are known as   Fountains   Old Faithfuls   Hot Bubbles   Geysers   Half-n-half Clue