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Week #8 Quarter 2 (2/2/13-12/6/13) (calendar site) Monday, 12/2

Today in I.S…. Week #8 Quarter 2 (2/2/13-12/6/13) (calendar site) Monday, 12/2. Have out: Energy Stamp Sheet “ Find Someone Who… ” Activity. I.S. Learning Goal: I can describe energy. Homework : ALL WORK DUE DECEMBER 12 TH !!!. Daily Question: How does energy go through changes?.

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Week #8 Quarter 2 (2/2/13-12/6/13) (calendar site) Monday, 12/2

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  1. Today in I.S… Week #8 Quarter 2 (2/2/13-12/6/13) (calendar site) Monday, 12/2 • Have out: • Energy Stamp Sheet • “Find Someone Who…” Activity • I.S. Learning Goal: • I can describe energy. • Homework: • ALL WORK DUE DECEMBER 12TH!!! Daily Question: How does energy go through changes? • Activities/Assignments: • Discuss Grades • New Energy Stamp Sheet • “Find Someone Who…” Activity • Make-up work time

  2. Are you a Leader or a Follower??? Leaders Follower You’re unique. Don’t be a follower. Be a leader. Anon Innovation distinguishes between a leader and a follower. Steve Jobs • A real leader faces the music, even when he doesn't like the tune. Anon • Before you are a leader, success is all about growing yourself. When you become a leader, success is all about growing others. Jack Welch • The best leaders are the best notetakers, best askers and best learners - They are shameless thieves Tom Peters

  3. Today in I.S… Week #8 Quarter 2 (2/2/13-12/6/13) (calendar site) Tuesday, 12/3 • Have out: • Energy Stamp Sheet • Energy Practice Test • I.S. Learning Goal: • I can describe energy. • Homework: • ALL WORK DUE DECEMBER 12TH!!! Daily Question: How does energy go through changes? • Activities/Assignments: • Energy Practice Test • Energy Assessment Sheet #1 Rubber Band Activity

  4. Update Table of Contents TABLE OF CONTENTS

  5. Energy

  6. Shooting Rubber Bands Overview For this introductory activity you will shoot rubber bands stretched to various distances. • Hypothesis: ? • Materials: • Rubber Band • Ruler • Data Table • Procedures: • Write a hypothesis on the back of your data table. • Place a rubber band on the edge of the ruler, pull it back to 10 cm, and release the rubber band. Be sure the ruler is parallel to the floor. • Measure the distance traveled by the rubber band and record it in a data table. • Repeat these steps while increasing the distance the rubber band is pulled back by five centimeters for each release. • Average your results and create a line graph of your average data with distance traveled on the y-axis and the distance you pulled the rubber band back on the x-axis. http://www.sciencebuddies.org/science-fair-projects/project_ideas/ApMech_p017.shtml?fave=no&isb=cmlkOjE1MjI3OTc4LHNpZDowLHA6MSxpYTpBcE1lY2g&from=TSW

  7. Data Table

  8. Questions • What patterns or trends did you notice? • Was energy used to launch the rubber band? If so, explain your reasoning. • What factors could have impacted the accuracy of your data? • Did your data support your hypothesis? Explain your reasoning.

  9. Today in I.S… Week #8 Quarter 2 (2/2/13-12/6/13) (calendar site) Wed/Thurs, 12/4 & 12/5 • Have out: • Energy Stamp Sheet • “Find Someone Who…” Activity • I.S. Learning Goal: • I can compare and contrast kinetic and potential energy. • I can compare and contrast the different forms of energy (chemical, mechanical, nuclear, thermal, electromagnetic, sound). • Homework: • ALL WORK DUE DECEMBER 12TH!!! Daily Question: How does energy go through changes? • Activities/Assignments: • Energy Assessment Sheet #2 & 3 • Finish Rubber Band Activity • Energy Outline Notes

  10. Update Table of Contents TABLE OF CONTENTS

  11. Shooting Rubber Bands Overview For this introductory activity you will shoot rubber bands stretched to various distances. • Hypothesis: ? • Materials: • Rubber Band • Ruler • Data Table • Procedures: • Write a hypothesis on the back of your data table. • Place a rubber band on the edge of the ruler, pull it back to 10 cm, and release the rubber band. Be sure the ruler is parallel to the floor. • Measure the distance traveled by the rubber band and record it in a data table. • Repeat these steps while increasing the distance the rubber band is pulled back by five centimeters for each release. • Average your results and create a line graph of your average data with distance traveled on the y-axis and the distance you pulled the rubber band back on the x-axis. http://www.sciencebuddies.org/science-fair-projects/project_ideas/ApMech_p017.shtml?fave=no&isb=cmlkOjE1MjI3OTc4LHNpZDowLHA6MSxpYTpBcE1lY2g&from=TSW

  12. Data Table

  13. Questions • What patterns or trends did you notice? • Was energy used to launch the rubber band? If so, explain your reasoning. • What factors could have impacted the accuracy of your data? • Did your data support your hypothesis? Explain your reasoning.

  14. Energy • the ability to do work or cause change • typically expressed in units of joules (J) • can be transferred from one object to another • two general types: • Potential • Kinetic

  15. 0.45 kg 0.45 kg Potential Energy (PE) • stored energy that an object has due to its position or chemical composition • Types: • Gravitational – results from vertical position or height • Formula: PE = mgh • Elastic – results from stretching or compressing Which soccer ball has more gravitational potential energy? Explain your reasoning. The types listed are not all-inclusive

  16. 2 m/s 3 m/s 0.45 kg 0.45 kg Kinetic Energy (KE) • energy of motion • depends on mass and velocity • Formula: KE = ½ mv2 • increases as mass or velocity increases and decreases as mass or velocity decreases What is the difference between speed and velocity? Which soccer ball has more kinetic energy? Explain your reasoning.

  17. PE KE Relationship Between PE and KE What is happening to the PE and KE as the soccer ball falls to the feet of the mid-fielder? What about the PE/KE graph could be considered misleading?

  18. Practice Problems • A diver weighing 46 kg is preparing for a dive from the 10 meter diving platform. How much gravitational potential energy does the diver have? • A cheetah weighing approximately 50 kg was seen chasing a gazelle at a speed of 32.4 m/s. What is the kinetic energy of the cheetah? PE = mgh Earth’s Gravity P.E. = (46 kg) (9.8 m/s2) (10 m) = 4,508 J (1)_____________ 2 (50 kg) (32.4 m/s)2 KE = 1mv2 2 = 26,244 J K.E. =

  19. Today in I.S… Week #8 Quarter 2 (2/2/13-12/6/13) (calendar site) Friday, 12/6 • Have out: • Energy Stamp Sheet • “Find Someone Who…” Activity • I.S. Learning Goal: • I can explain the law of conservation of energy. • I can explain the relationship between energy conversions and efficiency. • Homework: • ALL WORK DUE DECEMBER 12TH!!! Daily Question: How does energy go through changes? • Activities/Assignments: • Energy Assessment Sheet #4 & 5 • Forms of energy worksheet • Energy Outline Notes

  20. Update Table of Contents TABLE OF CONTENTS

  21. Energy • the ability to do work or cause change • typically expressed in units of joules (J) • can be transferred from one object to another • two general types: • Potential • Kinetic

  22. 0.45 kg 0.45 kg Potential Energy (PE) • stored energy that an object has due to its position or chemical composition • Types: • Gravitational – results from vertical position or height • Formula: PE = mgh • Elastic – results from stretching or compressing Which soccer ball has more gravitational potential energy? Explain your reasoning. The types listed are not all-inclusive

  23. 2 m/s 3 m/s 0.45 kg 0.45 kg Kinetic Energy (KE) • energy of motion • depends on mass and velocity • Formula: KE = ½ mv2 • increases as mass or velocity increases and decreases as mass or velocity decreases What is the difference between speed and velocity? Which soccer ball has more kinetic energy? Explain your reasoning.

  24. PE KE Relationship Between PE and KE What is happening to the PE and KE as the soccer ball falls to the feet of the mid-fielder? What about the PE/KE graph could be considered misleading?

  25. Practice Problems • A diver weighing 46 kg is preparing for a dive from the 10 meter diving platform. How much gravitational potential energy does the diver have? • A cheetah weighing approximately 50 kg was seen chasing a gazelle at a speed of 32.4 m/s. What is the kinetic energy of the cheetah? PE = mgh Earth’s Gravity P.E. = (46 kg) (9.8 m/s2) (10 m) = 4,508 J (1)_____________ 2 (50 kg) (32.4 m/s)2 KE = 1mv2 2 = 26,244 J K.E. =

  26. Potential and Kinetic Energy Practice Sheet • Complete the Potential and Kinetic Energy Practice Sheet Quietly on your own! • When you are done, raise your hand to receive a stamp. • Be prepared to share answers in class! 8 minutes

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