1. Which loses the most heat in cooling to 10oC ?   a glass filled with boiling water   a kettle filled with water at 60oC   a swimming pool filled with water at 30oC   Hint Half-n-half Clue   2. Given that 1 cal (about 4.2 J) of heat is required to raise the temperature of 1 g of water by 1oC, what will be the final temperature when 20.0 calories of heat are added to 4 g of water at 30oC ?   35.0oC   31.2oC   28.8oC   25.0oC   Half-n-half Clue   3. Heat is a form of _______.   electricity   energy   expansion   Half-n-half Clue   4. A mass of 20 kg falls 80m. If all its potential energy is converted to heat and gravitational acceleration = 9.8 m/s2, then the heat gained is   15680 J   1600 J   784 J   196 J   Half-n-half Clue   5. Given that 1 cal (about 4.2 J) of heat is lost by 1 g of water in cooling by 1oC, how much heat is lost by 4 g of water in cooling from 90oC to 15oC ?   1260.0 J   315.0 J   300.0 J   16.8 J   Half-n-half Clue   6. _______ requires no medium.   Conduction   Radiation   Convection   Half-n-half Clue   7. The increase in the area of a solid on heating is called   superficial expansion   cubical expansion   linear expansion   Half-n-half Clue