1. _______ requires no medium.   Radiation   Convection   Conduction   Hint Half-n-half Clue   2. The method of mixtures assumes that the heat lost by the hot body equals   the heat lost by the cold body   the heat gained by the hot body   the heat gained by the cold body   Half-n-half Clue   3. A mass of 50 kg falls 100m. If all its potential energy is converted to heat and gravitational acceleration = 9.8 m/s2, then the heat gained is   980 J   5000 J   49000 J   490 J   Half-n-half Clue   4. Liquids exhibit only _______ expansion.   cubical   linear   superficial   Half-n-half Clue   5. Heat is a form of _______.   expansion   energy   electricity   Half-n-half Clue   6. Different gases have the same rate of expansion for the same rise in temperature.   True   False   7. If the temperature of a body is _______ that of its surroundings, it will lose heat to its surroundings.   lower than   higher than   equal to   Half-n-half Clue