1. Solar Energy is a   Polluting Source of Energy   Very limited source of energy   Renewable Source of Energy   Non Renewable Source of Energy   Hint Half-n-half Clue   2. Greenhouse effect will lead to   Decrease in atmospheric pressure   An increase in Oxygen Production   An increase in the temperature   Greater rainfall   Half-n-half Clue   3. What is the name given to molten rocks that are erupted by a volcano?   Marble   Firestone   Slate   Lava   Half-n-half Clue   4. The surface of earth is mainly covered with   Oceans   Land   Ice   Mountains   Half-n-half Clue   5. What are metal bearing rocks called?   Bitumen   Ores   Slag   Metalloids   Half-n-half Clue   6. The length of the days and nights is equal at the   Equator   South Pole   North Pole   Tropic of Capricorn   Half-n-half Clue   7. Coal is formed from   Organic Matter   Rocks   Lava   Soil   Half-n-half Clue