1. Light travels in a   Circular Path   Hyperbolic Path   Straight Line   Parabolic Path   Hint Half-n-half Clue   2. What is the speed of sound in air in meters per second (at a pressure of one atmosphere and temperature of 25oC)?   330   110   230   490   Half-n-half Clue   3. When a spring is released, its potential energy is converted to   Electrical Energy   Magnetic Energy   Kinetic Energy   Light Energy   Half-n-half Clue   4. The presence of charge on a substance can be confirmed by a   Thermometer   Ammeter   Gold Leaf Electroscope   Electrodes   Half-n-half Clue   5. Which of the following is not a good heat insulator?   Iron   Wood   Feathers   Wool   Half-n-half Clue   6. Bending of light rays when they enter a different medium is known as   Reflection   Convection   Radiation   Refraction   Half-n-half Clue   7. Conductors have a _______ resistance.   Intermediate   Unknown   High   Low   Half-n-half Clue