1. Seismograph is the instrument used for recording earthquake shocks.   True   False   2. The length of the days and nights is equal at the   North Pole   South Pole   Tropic of Capricorn   Equator   Hint Half-n-half Clue   3. Granite and quartz are igneous rocks.   True   False   4. The surface of earth is mainly covered with   Mountains   Land   Ice   Oceans   Half-n-half Clue   5. Which of the following is a main component of common glass?   Powdered Mica   Sand   Marble   Water   Half-n-half Clue   6. Removal of the top layer of soil/rocks by wind, water is known as   Detoxification   Desalination   Corrosion   Erosion   Half-n-half Clue   7. What is caused by the slight tilt of the earths axis?   Tides   Earthquakes   Seasons   Day and Night   Half-n-half Clue