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62 Quantifying Energy. LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be modified only by teachers currently teaching the SEPUP course to customize.

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Presentation on theme: "62 Quantifying Energy. LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be modified only by teachers currently teaching the SEPUP course to customize."— Presentation transcript:

1 62 Quantifying Energy

2 LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be modified only by teachers currently teaching the SEPUP course to customize the unit to match their students’ learning levels or to insert additional teaching aides. Modified slides may be used only by the modifying teacher in his or her classroom, or shared with other teachers of SEPUP within the teacher’s school district, with these same restrictions. Modified slides may not be taken out of the classroom or distributed to any non-student person or organization. Except for use with students in the classroom, modified slides may not be published in printed or electronic form, including posting on the Internet. Only text may be modified: photographs and illustrations on the slides may not be modified in any way except to change their size. DISCLAIMER OF WARRANTY. THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (“University”) MAKE NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. University will not be liable for any costs, damages, fees or other liability, nor for any direct, indirect, special, incidental or consequential damages (including lost profits) with respect to any claims by the purchaser or user of SEPUP or any third party on account of or arising from the use or modifications to the slides. Client acknowledges and accepts that University services are provided on an as-is basis. Copyright © 2015 The Regents of the University of California. All rights reserved. Header photo: Sam Howzit | Flickr Creative Commons Slide Design: Shaun Wegscheid | Fonts: Arial, Kalinga Title slide photo: Jean Scheijen | FreeImages.com

3 62 Quantifying Energy Key Vocabulary heat temperature

4 62 Quantifying Energy Look at the two beakers Is the temperature the same in both beakers? Do the waters in each beaker have the same amount of thermal energy? Record your answers in your notebook.

5 62 Quantifying Energy Look at the next set of beakers Is the temperature the same in both beakers? Does the water in each beaker have the same amount of thermal energy? Discuss your thoughts with the class.

6 62 Quantifying Energy Brainstorm Brainstorm a way to determine the amount of energy it takes to melt an ice cube. Share your thoughts with the class.

7 62 Quantifying Energy Read the introduction and look for key ideas The ice cubes absorb thermal energy, which causes them to melt.

8 62 Quantifying Energy How much energy does it take to melt an ice cube?

9 62 Quantifying Energy Safety Use caution when working with the hot water. If you spill any on your hand, hold your hand under cool water for five minutes.

10 62 Quantifying Energy Complete the Procedure and record your data Be sure to take the temperature readings immediately before adding the ice to the hot water and immediately after the ice melts.

11 62 Quantifying Energy How does this activity relate to energy in the home? Share your thoughts with the class.

12 62 Quantifying Energy Analysis question 1 If the energy absorbed by the ice is exactly equal to the energy lost by the water, what was the amount of energy needed to melt the ice? Show your calculation.

13 62 Quantifying Energy Analysis question 2 Do you think all of the energy lost by the hot water was transferred to the ice? Explain.

14 62 Quantifying Energy Analysis question 3 Do you think that stirring the mixture had an effect on the melting of the ice? Explain why or why not.

15 62 Quantifying Energy Analysis question 4 Based on your answers to Analysis Questions 2 and 3, do you think your calculation of the heat energy absorbed by the ice is likely to be too high or too low? Explain.

16 62 Quantifying Energy Analysis question 5 How is the energy transfer in this experiment similar to the energy transfer that occurs in a house? Explain, and provide an example.

17 62 Quantifying Energy How much energy does it take to melt an ice cube?

18 62 Quantifying Energy Key vocabulary definitions Heat - The movement of thermal energy from hot to cold. Temperature - A measure of molecular motion, generally using a Fahrenheit (F) or Celsius (C) scale.


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