1. What is the name given to molten rocks that are erupted by a volcano?   Firestone   Slate   Marble   Lava   Hint Half-n-half Clue   2. The center of the earth is known as the   Atmosphere   Hydrosphere   Crust   Core   Half-n-half Clue   3. Natural hot water springs occurring in New Zealand, Italy and Iceland are known as   Geysers   Hot Bubbles   Old Faithfuls   Fountains   Half-n-half Clue   4. Granite and quartz are igneous rocks.   True   False   5. The surface of earth is mainly covered with   Oceans   Land   Mountains   Ice   Half-n-half Clue   6. What is caused by the slight tilt of the earths axis?   Day and Night   Seasons   Earthquakes   Tides   Half-n-half Clue   7. Which of the following is a main component of common glass?   Powdered Mica   Marble   Water   Sand   Half-n-half Clue