Elective Science (Grade 10)
- 1. Convert 100 °C to Fahrenheit
A) 212 °F
B) 32 °F
C) 0 °F
- 2. Convert 68 °F to Celsius
A) 273 °C
B) 50 °C
C) 20 °C
- 3. Convert 32 °C to Kelvin
A) 305.15 K
B) -241.15 K
C) 273.15 K
- 4. Convert 96.8 °F to Kelvin
A) 309.15 K
B) 369.95 K
C) -176.35 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) Heat
C) Temperature
- 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) Thermal energy
B) Heat
C) Temperature
- 8. How is heat transferred in this image?
A) Convection
B) Radiation
C) Conduction
- 9. How is heat transferred in this image?
A) Conduction
B) Radiation
C) Convection
- 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 cal/g°C
B) 30 °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) 1000 cal
B) 3000 cal
C) 2000 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) 337.5 cal/g°C
B) 0.217 cal/g°C
C) 0.135 cal/g°C
D) 7.4 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 J/kg K
B) 5000 cal/g°C
C) 5000 Joules
D) 5000 cal
- 18. How many calories are in 500 Joules?
A) 2,093 cal
B) 119.5 cal
C) 0.119 cal
- 19. Convert 100 cal into Joules.
A) 418.6 Joules
B) 23.9 Joules
C) 2390 Joules
- 20. Convert 10,000 Joules into Kilocalories.
A) 2.38 Kcal
B) 41,860 Kcal
C) 2388.9 Kcal
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