Friday!

Honors Physics moved from static fluids to fluids in motion today. The discussion centered around both the continuity equation and Bernoulli’s equation, which are statements of conservation of mass and energy in fluids. Bernoulli’s Principle and the pressure-at-depth equation were examined as special cases derived from Bernoulli’s equation.

Physical Science B discussed the concept of specific heat and related this concept to real-life situations such as moderate coastal climates. We went over homework problems dealing with specific heat and will get a few more on Monday. These types of problems and questions involving specific heat always show up (usually more than once) on the MCAS exam, so make sure you have a good handle on this topic.

Physical Science E took time to examine the three methods of heat transfer. No matter the method of transference, heat always moves from high-temperature objects/areas to low-temperature objects/areas, but the type or presence of medium dictates how the energy is passed. How well the energy is passed or accepted is a factor of specific heat, which we will hit on Monday.

Physics F began a discussion of fluids in motion and examined both free and enclosed liquids and gases. We got around to comparing types of flow (laminar, turbulent), describing an ideal fluid (and why they don't really exist) and using Bernoulli's Principle to explain certain aspects of life such as why smoke goes up a chimney or how perfume atomizers function. On Monday, you will get to work on the pressure/depth lab, so remember to wear things that you don't mind accidentally getting wet.

Physics G explored pressure variations with depth in a fluid column. A very clean linear relationship was documented and the regression equation was used to make predictions about real-world water-pressure situations. The second of the extra lab questions threw the class into an uproar, but with prodding, subtle hints, and graceful artwork on the whiteboard, students were able to calculate the force on their bodies at the bottom of the Marianas Trench. Have these labs ready for Monday!

Homework

Honors Physics A: Practice 9D
Physical Science B: None
Physical Science E: Complete the Practice p. 434 #2, 3, 5, and the 13.2 Section Review #5 and 6
Physics F: Read lab sheet. Complete p.343 #10-15 and p.344 #20,21 by Tuesday
Physics G: Complete lab write up