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Good Afternoon !

Good Afternoon !. Make sure your data tables Activity 83 and your graphs ar e complete ! Make sure you have a title and key for your 3 lines! Start setting up for Act. 84. Agenda. Act. 83 Objective Concept Map Act. 84 Homework. Objective.

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Good Afternoon !

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  1. Good Afternoon! • Make sure your data tables Activity 83 and your graphs are complete! Make sure you have a title and key for your 3 lines! Start setting up for Act. 84

  2. Agenda • Act. 83 • Objective • Concept Map • Act. 84 • Homework

  3. Objective • Students will be able to learn further of the concepts of force and acceleration in the context of safety features.

  4. Review Graph

  5. Analysis #1:Why does the stopping distance depend on road conditions? Road conditions affect the amount of friction between the tires and the road. Surfaces with less friction are more slippery.

  6. Analysis #2 What might cause:a. slippery road conditions? Such things as snow, ice, gravel, and oil can cause slippery conditions.

  7. Analysis #2: What might cause:b. driver distractions Cell phones, texting, music, passengers, eating, drinking, and other vehicles.

  8. Analysis #3: In which of the three situations does it take: The least distance to stop? Explaining using evidence. The most distance to stop? Explaining using evidence.

  9. Concept Map • Create a concept map using the terms listed in Analysis Question 7 (p. E48) • Draw the concept map in your journal.

  10. Activity 84:Decelerating Safely • Date: 4/1/13 • Challenge Question: • Getting Started: How do you know when you are accelerating while traveling in a car? • Gas pedal, speedometer increases, force created • How do you know when you are decelerating while traveling in a car? • Brakes, speedometer decreases, less force- no force

  11. Glossary • Decceleration- Stopping or slowing motion

  12. Intro & Safety Features • The driver and the passenger keep moving after a crash because of inertia and it will keep going until we have another force act upon it. • Deceleration affects the seriousness of a person’s injury depends on the impact of the car and how hard the collision is. • Safety features to avoid and reduce injuries in an accident are seatbelt, brakes, airbags, tires • Science concepts engineers need to understand are friction, forces, and acceleration.

  13. Safety features • Safety features include friction, forces, and deceleration to avoid and reduce accidents. • Engineers use their knowledge of forces and motion to develop safety features for vehicles.

  14. Talking Drawing Activity • Think about what a safe vehicle looks like, • Draw the safe vehicle and label the parts. • After reading draw a safe vehicle. • Describe what changed in your before and after pictures.

  15. Before the Accident • Car safety features related to deceleration are.. • Brakes work… • Tires work….. • It is important to keep tires and brakes in good condition because…… • ABS system is used in today’s vehicles because… • Older models don’t use the ABS system because….

  16. Activity 84 • Read pgs. • Write the topic of each section and find the main idea of the section. Write in your own words the main idea

  17. During an Accident • The force that stops the inertia of the passengers during a crash is….. • Speed affects the force of the impact during a crash by…. • The safety features that reduce the force of impact during a crash are…. • These features work by…..

  18. Homework • Finish the main ideas for each section Pgs. 50-54-topics in green! • Analysis #1-3 pg. E-54-Act. 84 • Extra Credit due Friday, 4/5/13 Analysis #4 pg. E-54

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