Mr. Pacios

Sunday	Monday	Tuesday	Wednesday	Thursday
8:15	8:15	8:15 9C	8:15	8:15
9:45	9:45 9A	9:45	9:45 9A	9:45
11:05 9A	11:00	11:05	11:05	11:05
13:05	13:05 9C	13:05 9B	13:05	13:05
14:15 9B	14:15 9B	14:15	14:15	14:15 9C

Grade 9	Key Concept	Related Concepts	Global Context	Assessment Criteria
Scientific Method	Relationships	Communication Function Evidence	Scientific and Technical Innovation	B,C
Cells and Enzymes, hormones, and homeostasis	Change	Consequences Interaction Transformation	Scientific and Technical Innovation	B,C Factors affecting enzymes D Hormones and homeostasis presentations
Rates and Equilibria	Systems	Models Patterns	Scientific and Technical Innovation	B,C Factors affecting the rate of a reaction A Test
Chemical Bonding	Change	Balance Movement	Scientific and Technical Innovation	A Covalent and Ionic Bonds
The Eye and Seeing, Waves, Particles, and Radiation	Relationships	Consequences Energy Evidence Form	Scientific and Technical Innovation	B,C Investigating the factors affecting the period of an oscillation of a pendulum D Lasik Surgery

All about that carbon dating:

Fission, Fusion, and half-life

Dear students,

Please find the template on the previous post. Here goes some directives for your work today.

Make sure to measure the length of the pendulum from the pivot point to the center of the bob, only measure the length after the pendulum is assembled
You will need at least 5 different lengths of pendulum and for each one carry out 3 trials. Make sure at least 3 of those lengths are 12cm or shorter.
To find the period of 1 oscillation, time 5 full oscillations of the pendulum with a stopwatch, then divide the time by 5. This is done so that the error associated to starting the stopwatch and the pendulum at the same time is reduced.
Graph the period(y-axis) vs the length (x-axis), it should look like f(x) = sqrt x.
Remember to record the lengths in meters and the time in seconds.
Graph the period squared(y-axis) vs the length (x-axis). It should be a line of slope close to 4.
If you are done ccollecting data, then proceed to writing the lab, start with Criterion B
In the background information, make sure to write about the equation of the period of a pendulum (research), how each variable affects the period (mass, length, angle, gravity). Can you figure out why the slope of the last graph should be 4? As for some historical background, you can talk about Christiaan Huygens, the dutch Newton. Uses of pendulums in real life include wrecking balls, rides in amusement parks (viking ship et al), religious practices, clocks, music, and more.

The parts of the eye
Concave
Convex
Ray (of light)
Converging
Diverging
Lense
Refraction
Diffraction
Magnification
Parallel
Focus
Image
Range
Myopia, hyperopia, prebyopia
Electromagnetic Spectrum, visible spectrum
Oscillation, vibration, period, frequency, amplitude, wavelength, pitch, volume (as in sound)
Audible
Dispersion
Superposition
Radioactivity, fission, fusion
Half-life, isotopes