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Lab 1,2,3,5 Wrap Up

Lab 1,2,3,5 Wrap Up. Mr. Foster 02-21-2011. Lab Station 1. Identify how substances differ. What is the difference between mass and weight?. Lab Station 1. How were the metal blocks similar How were the metal blocks different?. Things to think about….

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Lab 1,2,3,5 Wrap Up

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  1. Lab 1,2,3,5 Wrap Up Mr. Foster 02-21-2011

  2. Lab Station 1 • Identify how substances differ. • What is the difference between mass and weight?

  3. Lab Station 1 • How were the metal blocks similar • How were the metal blocks different?

  4. Things to think about… • Substances Differ: Mass, volume, shape, density, texture, reaction to light and temperature. • Weight is affected by gravity. Mass is not. Mass is a measure of matter. • The blocks had the same volume. • They had different masses and therefore different densities.

  5. Lab Station 2 • How is an electrical circuit similar to a dam? Compare locations of potential and kinetic energy. • How are dams used to make electricity?

  6. Lab Station 2 • Where is the energy lost for useful work in an electrical circuit? • Where is the energy lost for useful work in a dam? • Where does friction occur?

  7. Comparison

  8. Things to Think About… • Bulbs are lit with electrical energy • How electricity is measured :Amps (amperage), voltage (volts), resistance, and watts. • Energy Changes from electrical to light and heat. (was the bulb warm?) • Parallel = 1.5 volts • Series both lights would go out. (broke the current through the circuit) • Potential: Water stored in a dam like electricity stored in a battery. • Kinetic: Flow of water through the spillway like the electrons through the circuit

  9. Lab Station 3 • What types of energy conversions can be observed as the gliders move? • What types of forces acted on the moving gliders?

  10. Lab Station 3 • How can you determine the net force acting on a glider? • How does the law of inertia explain the motion of the gliders?

  11. Things to think about… • Air in the balloon =potential mechanical energy • Air leaving the balloon = kinetic mechanical energy • Gravity, fluid and sliding friction • Same direction - added • Opposite direction subtracted • Object in motion stays in motion until a force is acted upon the object

  12. Station 5

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