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U2C2A3 RS

U2C2A3 RS. p 162. Key Question : What happens to the energy in applied, friction and drag interactions?. We Think page 162 #’s 1-2. Explore Your Ideas. page 163. Explore Your Ideas. Part A: Energy Diagrams for Applied Interactions Step 1 page 163. Applied. Part A: #1. motion.

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U2C2A3 RS

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  1. U2C2A3 RS p 162

  2. Key Question: What happens to the energy in applied, friction and drag interactions? We Think page 162 #’s 1-2

  3. Explore Your Ideas page 163

  4. Explore Your Ideas Part A: Energy Diagrams for Applied Interactions Step 1 page 163

  5. Applied Part A: #1 motion stored chemical

  6. You have 6 minutes to complete #s 2 – 4 on p 164 Read Step 2 #s 2-4 on p 164

  7. Applied Part A: #2

  8. Applied Part A: #3

  9. Applied Part A: #4

  10. Part B: Energy Diagrams for Friction Interactions 5. In both cases, what was the evidence that a friction interaction had occurred? Step 1:Friction video

  11. 5. In both cases, what was the evidence that a friction interaction had occurred? Wooden block rubbed along table: There was a change in…. Rubbing hands: There was a change in….

  12. 6. What is the evidence that a friction interaction is occurring? Now it’s your turn! Step 2: Rub the palms of your hands together.

  13. Step 3:Gently shove one of your books so that it moves across your desk. There is a friction interaction between the book and the desktop. 7. What do you observe?

  14. Read p.p. 165-166 to answer #’s 8-11 (Do Not move on to Part C.) You have 6 minutes to complete #s 8 - 11

  15. Part B: #8

  16. Part B: #9

  17. Part B: #10

  18. Part B: #11 Friction s motion thermal The source decreases in motion energy. The receivers increase in thermal energy.

  19. Part B: #11

  20. Part C: Energy Diagrams for Drag Interactions Step 1:video - drag in air (Watch, then complete #’s 12-14)

  21. Part C:#12 Drag car/parachute mechanical energy air increases in motion energy decreases in motion energy

  22. Part C:#13 Drag boat mechanical energy water increases in motion energy decreases in motion energy

  23. Part C: Energy Diagrams for Drag Interactions Step 3: Think about a rider on a bicycle. Bicycle riders experience a lot of drag!

  24. Part C:#14 Drag bike rider mechanical energy air increases in motion energy decreases in motion energy

  25. You have 5 minutes to complete Make Sense of Your Ideas #s 1 - 3

  26. Make Sense of Your IdeasQuestion 1 In general, what evidence shows that an applied interaction has occurred? The receiver increases in motion energy.

  27. Make Sense of Your IdeasQuestion 2 2. In general, what evidence shows that an friction interaction has occurred? The receivers increase in thermal energy.

  28. Make Sense of Your IdeasQuestion 3 3. In general, what evidence shows that an drag interaction has occurred? The receiver increases in motion energy.

  29. Question 1 - Applied Interaction Applied motion The receiver increases in motion energy. The source decreases in energy.

  30. In an applied mechanical interaction, the energy from the receiver often gets transformed into motion energy of the source.

  31. Question 2 - Friction Interaction Friction Receivers thermal motion The receivers increase in thermal energy. The source decreases in motion energy.

  32. Question 2 • In a friction interaction, the energy source (motion energy) gets transformed into thermal energy of the receivers (both surfaces rubbing against each other).

  33. Question 3 - Drag Interaction Drag Re-write your answer to #3.

  34. Question 3Drag Interaction motion motion The receiver increases in motion energy. The source decreases in motion energy.

  35. Question 3 • In a drag interaction, the energy of the source (motion energy) gets transformed into motion energy of the receiver (the gas or liquid the source is in).

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