The Final Countdown

Honors Physics A finished up their unit on heat and temperature with a comparison of the methods of heat transfer – conduction, convection and radiation. The first two are matter-dependent, but heat transfer by radiation can take place without the presence of a medium. We will go into this method (the transmission of energy without the necessity of a medium) more deeply when we discuss electromagnetic waves in a later chapter. Time was then spent outlining what material from this chapter will be present on the midterm.

Physical Science B went over their heat exams and then conducted a lab targeting the properties of transverse waves. The lab is nice in that you can clearly see the relationship between simple harmonic motion and wave formation, as well as the physical features of wave formations. Further, you get practice measuring/calculating wavelength, frequency and wave speed. Remember, wave information will not be on Tuesday’s midterm exam. Use last year’s test, plus the heat material to guide your studies.

Physical Science E went over their heat exams and then had practice working with the wave speed formula. Evaluation of and calculation of wave speed for both mechanical and electromagnetic waves is a common test item on the MCAS exam, so make sure that you have that skill down pat. Your midterm exam is not until Thursday, and, like B Block, it will not contain any questions about waves.

Physics F and G reviewed their heat formula homework problems and applied this problem-solving technique to the process of calorimetry. Calorimetry is a versatile tool for monitoring heat content of materials and determining a material’s specific heat (and possibly its identity). We will look at calorimetry in lab, so you will get the chance to put the process and mathematical analysis in action.

Homework:

Everybody – Study for Midterm Exams!