Wednesday, 11/9/16- B Day- Marching Band Presentation Period 4

Core Ideas:

  • Gases and liquids are made of molecules or inert atoms that are moving about relative to each other.
  • In a liquid, the molecules are constantly in contact with others; in a gas, they are widely spaced except when they happen to collide. In a solid, atoms are closely spaced and may vibrate in position but do not change relative locations.

Learning Activities:

  1. Do Now- Get out your science notebook and open to page 28. Look at your model of water at the particle level and read your conclusion from your observations. Which inner circle is smaller?
  2. Investigative PhenomenonWater Balloon Popping in Slow Motion– Using what you learned about water in the water drop observation and the food coloring in water demonstration, create a model to explain what is happening in the slow motion video of a water balloon popping. Why do you think the water keeps its shape the moment the balloon is popped? Imagine a drop of water hanging from your finger. How is this similar to the water staying together after the balloon is popped? (Write-Pair-Share). Trim and tape your model as a flip page to p.28.

Period 2:

  1. Discussion Share observations (full class). When you squeezed the drop of water out of the dropper, did the water break apart or did it hold together? When you tilted the wax paper, did the drop split apart or stay together? When you were pulling the drop around the wax paper, did the water seem to hold together or come apart easily? When you tried to split your drop, did the drop separate easily? What happened when the two small drops touched?
  2. Demonstration Food coloring in water- What do you observe? What does this tell you about the particles that make up water?
  3. Model– On page 28 of your science notebook, draw a model of water on molecular level based on your observations of the investigation and the demonstration. Make a conclusion about whether water holds together well or comes apart easily and why. Observe animation of liquid water molecules and adjust model. Add key word “molecule” to index.
  4. Investigative PhenomenonWater Balloon Popping in Slow Motion– Using what you learned about water in the water drop observation and the food coloring in water demonstration, create a model to explain what is happening in the slow motion video of a water balloon popping. Why do you think the water keeps its shape the moment the balloon is popped? Imagine a drop of water hanging from your finger. How is this similar to the water staying together after the balloon is popped? (Write-Pair-Share). Trim and tape your model as a flip page to p.28.
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