Countdown!

We just have to make it through Wednesday...hold on tight...

Honors Physics reviewed their Bernoulli’s equation problems and then launched into a discussion about gas laws. The three gas laws that we went over in 9th grade (Boyle’s, Charles’s and Gay-Lussac’s) all derive from the ideal gas law and are valid when the number of particles in the sample does not vary and one of the following – pressure, temperature, volume – remain constant. We won’t have an exam on this chapter until after we return from break, but we will start in on the next chapter (heat), since the first bit deals with heat and temperature, two concepts we touched on in this chapter already.

Physical Science B worked practice problems with specific heat. Remember to look to units to identify which piece of information a number represents and read problems carefully when working with temperature. Are you being asked to solve for initial temperature, final temperature or temperature change? We’ll go over this sheet in class tomorrow, so do your best to work out each item.

Physical Science B went over their specific heat homework and then received a set of specific heat problems/questions taken from prior MCAS exams. We will go over these on Wednesday, and also go over tomorrow’s lab. The activity that you will conduct tomorrow will allow you to apply the heat formula to two different situations – to assess heat gained and heat lost for two materials in a system and to calculate the amount of energy delivered by a fuel (candle wax).

Physics F had their opportunity to work through the pressure with depth lab and got the same results as the previous two groups – a tight linear relationship between pressure and depth that generated an equation that could predict pressure at any depth in that specific fluid. We will go over this lab tomorrow, so have it completed and ready to go.

Physics G discussed their lab activity, including how the equation of the line generated in class related to our work in the textbook. Time was then allowed for students to work on test corrections.

Homework

Honors Physics A: 9.3 and 9.4 Section Reviews and Practice 9E
Physical Science B: Complete specific heat worksheet
Physical Science E: Read lab sheet. Complete MCAS problems by Wednesday
Physics F: Complete lab write up
Physics F: Complete test corrections