Elective Science (Grade 10)

- 1. Convert 100 °C to Fahrenheit
A) 32 °F B) 212 °F C) 0 °F - 2. Convert 68 °F to Celsius
A) 20 °C B) 273 °C C) 50 °C - 3. Convert 32 °C to Kelvin
A) 305.15 K B) 273.15 K C) -241.15 K - 4. Convert 96.8 °F to Kelvin
A) -176.35 K B) 309.15 K C) 369.95 K - 5.
*It*is energy in motion, this transfer ir made from the object of higher temperature to another of lower temperature.
A) Thermal energy B) Temperature C) Heat - 6. If you have two cups of coffee, one with 150 ml of liquid, and the other one with 250 ml, both at 80 °C, which one has more thermal energy?
A) The small one B) Both have the same. C) The big one - 7.
*It*can be measured in Kelvin, Fahrenheit or Celsius.
A) Temperature B) Heat C) Thermal energy - 8. How is heat transferred in this image?
A) Convection B) Radiation C) Conduction - 9. How is heat transferred in this image?
A) Radiation B) Convection C) Conduction - 10. How is heat transferred in this image?
A) Convection B) Conduction C) Radiation - 11. How is heat transferred in this image?
- 12. How is heat transferred in this image?
- 13. How is heat transferred in this image?
- 14. An aluminum spoon of 83 g with a temp of 100°C is placed in a glass with 250g of water at 25°C. What is the equilibrium temperature? Round up.
A) 30 °C B) 30 cal/g°C C) 30 Kelvin D) 30 cal - 15. What is the amount of heat, in calories, that is necessary to raise the temperature of 50 g of water from 10°C to 90°C?
A) 3000 cal B) 2000 cal C) 1000 cal D) 4000 cal - 16. What is the specific heat, in cal/g °C, of a substance with a mass of 50 g that requires 540 calories to raise its temperature from 20°C to 100°C?
A) 7.4 cal/g°C B) 0.217 cal/g°C C) 0.135 cal/g°C D) 337.5 cal/g°C - 17. How much energy is needed for 100 g of milk to raise it's temperature from 10 °C to 60 °C? Assume it's Ce is 1 cal/g°C.
A) 5000 cal/g°C B) 5000 Joules C) 5000 cal D) 5000 J/kg K - 18. How many calories are in 500 Joules?
A) 0.119 cal B) 119.5 cal C) 2,093 cal - 19. Convert 100 cal into Joules.
A) 418.6 Joules B) 2390 Joules C) 23.9 Joules - 20. Convert 10,000 Joules into Kilocalories.
A) 2.38 Kcal B) 41,860 Kcal C) 2388.9 Kcal |

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