Date post: | 17-Dec-2015 |
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Flashback
• In a chemical reaction there may be a:• A. Color change• B. Formation of a gas• C. Heat change• D. All of the above
• In winter, ice and snow may cover the concrete sidewalk, making it slippery. It is harder to walk because ice lowers this force:
• A. Gravity• B . Friction• C. Propulsion• D. Inertia
Answers
• http://studyjams.scholastic.com/studyjams/jams/science/forces-and-motion/inertia.htm
Flashback
• In a chemical reaction there may be a:• A. Color change• B. Formation of a gas• C. Heat change• D. All of the above
• In winter, ice and snow may cover the concrete sidewalk, making it slippery. It is harder to walk because ice lowers this force:
• A. Gravity• B . Friction• C. Propulsion• D. Inertia
• Is this a TINSTAAFL? – A strange hotdog where the bun is really a clump of French Fries.
Copyright © 2010 Ryan P. Murphy
Energy cannot be created or destroyed but can diminish in quality from useful to less useful.
Copyright © 2010 Ryan P. Murphy
Differences in temperature causes differences in pressure between high and low which drives the wind.
• Review! Mechanical Energy: The sum of kinetic and potential energy.
Copyright © 2010 Ryan P. Murphy
• Review! Mechanical Energy: The sum of kinetic and potential energy.
Copyright © 2010 Ryan P. Murphy
• Potential Energy: (PE) The energy stored by an object as a result of its position.
Copyright © 2010 Ryan P. Murphy
• Potential Energy is the energy of position. Objects that are elevated have a high potential energy.–Kinetic Energy is the energy of motion.
Copyright © 2010 Ryan P. Murphy
• Potential Energy is the energy of position. Objects that are elevated have a high potential energy.–Kinetic Energy is the energy of motion.
Copyright © 2010 Ryan P. Murphy
• Activity! PE – KE Skateboarder Simulator• Search Phet Skate Board Demo.• Download program (Free) -
http://phet.colorado.edu/en/simulation/energy-skate-park
Copyright © 2010 Ryan P. Murphy