Efficiency 6 – Hollms School

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First	First	Last	Quiz Score Total	Question Image 1	A) Which of these two setups is most most efficient at heating the water?	B) Why is this?	C) Explain how using a lid will make both pans more efficient	Question Image 2	D) Using a kettle with plastic walls the to heat the water is more efficient than using the pans shown above. Suggest 3 reasons why?	Quiz Percentage Grade
ppefmh	Ed	Garstin	1/3		left right	The right pan has a larger surface area in contact with the electric hob, therefore more thermal energy is transferred to the water. The left pan has a larger surface area in contact with the electric hob, therefore more thermal energy is transferred to the water. The pan on the left has more power The pan on the right has more contact with the air	A lid would reduce the amount of thermal energy passing from the water into the air. A lid would reduce the amount of thermal energy passing from the air into the water. A lid would increase the power of the electric hob. A lid would reduce the thermal energy in the water.		serth	33%
ppefmh	Ed	Garstin	2/3		left right	The right pan has a larger surface area in contact with the electric hob, therefore more thermal energy is transferred to the water. The left pan has a larger surface area in contact with the electric hob, therefore more thermal energy is transferred to the water. The pan on the left has more power The pan on the right has more contact with the air	A lid would reduce the amount of thermal energy passing from the water into the air. A lid would reduce the amount of thermal energy passing from the air into the water. A lid would increase the power of the electric hob. A lid would reduce the thermal energy in the water.		xfgj	67%
First	First	Last	Quiz Score Total	Question Image 1	A) Which of these two setups is most most efficient at heating the water?	B) Why is this?	C) Explain how using a lid will make both pans more efficient	Question Image 2	D) Using a kettle with plastic walls the to heat the water is more efficient than using the pans shown above. Suggest 3 reasons why?	Quiz Percentage Grade