1. A mass of 40 kg falls 100m. If all its potential energy is converted to heat and gravitational acceleration = 9.8 m/s2, then the heat gained is   392 J   4000 J   39200 J   980 J   Hint Half-n-half Clue   2. Heat is a form of _______.   electricity   energy   expansion   Half-n-half Clue   3. If the temperature of a body is _______ that of its surroundings, it will lose heat to its surroundings.   equal to   higher than   lower than   Half-n-half Clue   4. Which loses the most heat in cooling to 10oC ?   a kettle filled with water at 60oC   a glass filled with boiling water   a swimming pool filled with water at 30oC   Half-n-half Clue   5. 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 50.0 calories of heat are added to 5 g of water at 26oC ?   36.0oC   28.4oC   16.0oC   23.6oC   Half-n-half Clue   6. The SI unit of heat (thermal energy) is   Watt   Newton   Pascal   Joule   Half-n-half Clue   7. Which is the 'odd one out'?   Erg   Watt   Calorie   Joule   Half-n-half Clue