1. Greenhouse effect will lead to   Greater rainfall   Decrease in atmospheric pressure   An increase in Oxygen Production   An increase in the temperature   Hint Half-n-half Clue   2. Solar Energy is a   Polluting Source of Energy   Non Renewable Source of Energy   Renewable Source of Energy   Very limited source of energy   Half-n-half Clue   3. Natural hot water springs occurring in New Zealand, Italy and Iceland are known as   Fountains   Hot Bubbles   Old Faithfuls   Geysers   Half-n-half Clue   4. Which of the following is a main component of common glass?   Water   Marble   Powdered Mica   Sand   Half-n-half Clue   5. Seismograph is the instrument used for recording earthquake shocks.   True   False   6. What is caused by the slight tilt of the earths axis?   Earthquakes   Day and Night   Seasons   Tides   Half-n-half Clue   7. Stalactites and stalagmites consist of deposits of   Sodium Bicarbonate   Calcium Carbonate   Magnesium Carbonate   Silica   Half-n-half Clue