1. The three states of matter are solid, liquid and gas.   True   False   2. The science that deals with the study of sound is known as acoustics.   True   False   3. Which of the following has an organic origin?   Coal   Nylon   Sand   Bakelite   Hint Half-n-half Clue   4. What is the total number of bones in the human body?   32   196   206   512   Half-n-half Clue   5. The Earth is surrounded by an insulating blanket of gases which protects it from the light and heat of the Sun. This insulating layer is called the   Lithosphere   Hydrosphere   Atmosphere   Biosphere   Half-n-half Clue   6. What is the name given to molten rocks erupted by a volcano?   Geyser   Firestone   Crater   Lava   Half-n-half Clue   7. The three methods of science are observation, experimentation and _______.   inference   hypothesis   measurement   deduction   Half-n-half Clue