1. The shape of the earth is   Cubical   Flat   Spherical   Conical   Hint Half-n-half Clue   2. The surface of earth is mainly covered with   Mountains   Ice   Land   Oceans   Half-n-half Clue   3. Seismograph is the instrument used for recording earthquake shocks.   True   False   4. What is caused by the slight tilt of the earths axis?   Day and Night   Earthquakes   Tides   Seasons   Half-n-half Clue   5. Which of the following is a main component of common glass?   Sand   Powdered Mica   Water   Marble   Half-n-half Clue   6. The earth rotates from   North to South   South to North   West to East   East to West   Half-n-half Clue   7. Coal is formed from   Rocks   Organic Matter   Lava   Soil   Half-n-half Clue