Presentation is loading. Please wait.

Presentation is loading. Please wait.

Warming up with energy Lesson objectives * know the difference between temperature and heat * Find out through experiment; the power of a bunsen burner.

Similar presentations


Presentation on theme: "Warming up with energy Lesson objectives * know the difference between temperature and heat * Find out through experiment; the power of a bunsen burner."— Presentation transcript:

1 Warming up with energy Lesson objectives * know the difference between temperature and heat * Find out through experiment; the power of a bunsen burner

2 Warming up with energy

3

4

5 HEAT 50cm 3 water thermometer Experiment to compare boiling times for different amounts of water Prediction: ……………………………………………………….. Conclusion: ……………………………………………………….. Temp / C For 50 cm 3 water Time / min

6 Temp / C TIME / mins

7 0 Temp / C TIME / mins Temp / C For 50 cm 3 water Time / min

8 0 Temp / C For 50 cm 3 water Time / min Temp / C TIME / mins

9 0 Temp / C TIME / mins Gradient = Δ temp Δ time

10 0 Temp / C TIME / mins Gradient = Δ temp = Δ T Δ time Δ t

11 0 Temp / C TIME / mins Gradient = Δ temp = Δ T Δ time Δ t = (68 -33) C 60 sec =

12 0 Temp / C TIME / mins Gradient = Δ temp = Δ T Δ time Δ t = (68 -33) C 60 sec = 0.58 C / sec

13 0 Temp / C TIME / mins Gradient = Δ temp = Δ T Δ time Δ t = (68 -33) C 60 sec = 0.58 C / sec Bunsen power: (assuming no energy loss) Δ U = m c Δ T Δ t =

14 0 Temp / C TIME / mins Gradient = Δ temp = Δ T Δ time Δ t = (68 -33) C 60 sec = 0.58 C / sec Bunsen power: (assuming no energy loss) Δ U = m c Δ T Δ t = 0.05 x 4200 x 0.58 =

15 0 Temp / C TIME / mins Gradient = Δ temp = Δ T Δ time Δ t = (68 -33) C 60 sec = 0.58 C / sec Bunsen power: (assuming no energy loss) Δ U = m c Δ T Δ t = 0.05 x 4200 x 0.58 = 121 W

16

17


Download ppt "Warming up with energy Lesson objectives * know the difference between temperature and heat * Find out through experiment; the power of a bunsen burner."

Similar presentations


Ads by Google