Download Day 1(1/8)- Gravity and Acceleration

Day 1(1/8)- Gravity and Acceleration
g = 32 ft/s^2 = 9.8 m/s^2
What is the meaning of 32ft/s/s?
speed is how fast
velocity is speed + direction
acceleration is how v changes every second
Law of Odd Numbers - distances fallen during each second follows the odd numbers. total
distance fallen follows the square of time.
Law of Falling Bodies
(a)all objects (heavy and light) fall at the same rate (acceleration is constant) in a vacuum.
(b)distance fallen is proportional to the square of time
(c)v is proportional to time
(d)a is constant
Film - Law of Falling Bodies
Film Questions (Class contest by groups)
Momentum p = mv
Hwk - p.257 #1abc
Day 2(1/10)-Forces (F=ma)
Gravity(weight=force of gravity) w=mg, push/pull, tension(rope), friction(and air resistance),
electric and magnetic forces
Classwork p.270 #1,2,3 /p.274 #5,6 /p.276 #18,25 - collect for 10pts
Hwk - p.275 #1-5,9-13
Day 3(1/14)Return and go over classwork.
Classwork-Collect SHM Notes
Simple Harmonic Motion
Springs and pendulums
Hooke's Law F=kx (k=spring constant N/m)
Hypothesis - questions then pose an answer
Experiment - determine the spring constant, k
Data - Graph the results
Conclusion - also state what could have gone wrong or might be improved
Hwk-p.276 #16(d=vt),22,23,24(F=ma),28(p=mv)
Day 4(1/16)-Newton's Laws
N1-Law of Inertia
N2- F=ma
N3-Action-Reaction Law
Demonstrate (1)'forever' spinning magnet and (2)action-reaction magnets
Resonance
Demos - singing wine glasses & 2 tuning forks
Film on resonance (Tacoma Narrows Bridge,breaking the wine glass)
Hwk-p.274 #1-4
Day 5(1/18)-Work = Force x Distance (W=Fd) [W]=J (joule)
Bed of Nails demo
Pressure = Force/Area (psi vs N/m^2)
more nails? why the log?
Film - Law of Inertia
Class Points - discussion groups
Hwk-p.285 #1,3,5
Day 6(1/23)- Power = Work/time
[P]=J/s=W(watt) 746W = 1hp =550 ft-lb/sec
Film - Newton's Laws
Class Points - discussion groups
Hwk-p.285 #2,4 /p.287 #1,2,5
Day 7(1/25)- W = FxD
Work equals force times distance.
Classwork - Worksheet #1,3,5,7
Power = Work/time (P=W/t)
Hwk - Power Worksheet #1-11(odd)
Day 8(1/29)- Chapter 8 Practice Test
Hwk - Power Worksheet #2-10(even)
Study for Chapter 8 Test (Wed or Thur)
Day 9(1/31)-Volcano Film
Volcano Worksheet
Hwk - Force Worksheet #2,4,6,8
Day 10(2/4)-Mechanical Advantage
(MA=output force/input force)
Simple Lever (fulcrum and leverage)
Pulley - (count the support ropes)
Wheel and axle - (steering wheel example)
Inclined Plane (ramp)
Wedge(Axe blade - push the ramp vs the block)
Screw(a twisting ramp)
Hwk - p.290 #5-8
Study for Ch 8 TEST
Day 11(2/6)- Ch 8 Test
GPE or PE (gravitational potential energy)
GPE = mgh (potential for the force of gravity to do work, W=Fd=(mg)h)
Hwk - p.296 #1,2,5,6 /p.299 #1ab
Day 12(2/8)- GPE (Gravitational Potential Energy) PE = mgh
Classwork(10pts) Worksheets #2,4,6,8
Old Time Physics Quiz!
(actually this will be discussion group points)
Hwk - p.299 #1c,2,4 /p.315 #1-5
Day 13(2/12)- Frames of Reference
Film Worksheet
Hwk - Potential Energy(PE) Worksheet
#1,7,9,10
Day 14(2/14)Energy of Motion - Kinetic Energy
K or KE = .5mv^2(.5 x mass x velocity-squared)
Classwork KE Worksheet #1,5,7,9
CNN Presents Physical Science Shorts(#1-5 thru airbag sensors)
Hwk - Worksheet #3,4,6,10
Day 15(2/20)-Different Forms of Energy
Elastic Potential Energy
Chemical Potential Energy
Nuclear Energy
Heat Energy (kinetic energy of molecules)
Light and Sound Energy
Electrical and Magnetic Energy
Classwork p.301 #1-3
Hwk p.305 #1-7,9ac
Day 16(2/22)-Re-take Kinetic Energy Homework Quiz
Conservation of Energy(E)
Mechanical Energy M.E. = K.E. + P.E
(large-scale motion or position)
Roller Coaster Problem
Friction and Heat Energy(Q)
CNN Film Shorts #6-10
Hwk p.315 #6-11,16
Day 17(26)-%Efficiency = Work out/Work in
(multiply by 100 to get %)
Classwork p.314 #4,5,7,8,9
Egg Drop Rules
Aerodynamics
Aerobie Rules
Hwk p.316 #13,14,18,19ab
Day 18(2/28)-Chapter 11 Waves - energy movement
mechanical waves require a medium
light(not mechanical)travels in a vacuum
light is an electromagnetic wave
transverse vs longitudinal waves
(vs ocean waves)
speed = frequency x wavelength
c = 3x10^8 m/s or 186,000 miles/sec
Doppler Effect
Reflection vs Refraction (diffraction)
interference (constructive vs destructive)
Film - Waves
Hwk - p.364 #1,2,4,5
p.373 #2,3,6
Day 19(3/4)-XC www.scilinks.org <guest>
keywords: <hk1112> <hk1114> <hk1121> <hk1123>
amplitude vs crest and trough
Reflection vs Refraction (diffraction)
interference (constructive vs destructive)
frequency is 1/period of time, f = 1/T
standing waves, beats
Classwork p.370 #1-4
Concave Mirror and it's Focus or 'focal pt'
Burning Paper to find the mirror's focus!
Hwk p.373 #7,8,9 /p.381 #1-10
Day 20(3/6)- Concave Mirrors + Ray Diagrams
Inside vs Outside the focal point
(1)Upright vs Inverted
(2)Real vs Virtual
Demos - Monster Bank, Frog real image,
disappearing coin banks
Hwk p.381 #11-15
Day 21(3/8)-Practice Quiz on Concave Mirrors
Grade in class
Plane Mirror and 1/2 height
2 plane mirrors and multiple images
Right angle mirrors
kaleidescopes
Hwk p.382 #17-22
Day 22(3/12)-Convex Mirror Example
Section 12.1 Sound
Mach 1 = speed of sound in air = 345m/s
pitch = frequency
human ear 20-20,000Hz (middle C = 256Hz)
amplitude = loudness
relative intensity (db = decibels)
Homework p.398 #1-6
Concave Mirror Quiz (40pts) next class
Day 23(3/14)- Concave Mirror Quiz
Section 12.2 Light
speed of light c=3x10^8 m/s
red 700-400nm violet = light wavelengths
em radiation from radio and tv waves to microwaves and infrared to visible light to
ultraviolet, x-rays and gamma rays = LIGHT
Reflection and mirrors
Refraction and lens
colors and prisms, bubbles, rainbows, thin film constructive interference
total internal reflection - fiber optics
Hwk p.419 #1-7,9,10
Day 24(3/18)- Light and Lens Demos
Spinners /Lens Bank /Heavy spinner + mirror
Converging (double convex) Lens
Ray Diagram and image description
Hwk p.419 #12-15,17,18,20
Day 25(3/20) - Practice for Lens Quiz
Diverging (double concave) Lens
Ray Diagram and image description
fiber optic tube /fish tank + laser
liter bottle and total internal reflection
Laser Fishing?
Rainbows, Bubbles
Ch 13 Electric Charge and Force
proton(+),electron(-),neutron(no charge)
opposites attract,conductors vs insulators
Cartoon Film on Static Electricity
Hwk - p.436 #1,2,4 /p.453 #2,3
Quiz next, next class on Double Convex Lenses
Day 26(3/22) - Ch 13 Electric Charge and Force
proton(+),electron(-),neutron(no charge)
opposites attract,conductors vs insulators
Cartoon Films(1&2) on Static Electricity
Voltage(V),Current(I),Resistance(R)
[V]=V(volts),[I]=A(amps),[R]='Greek Omega'(ohms)
Ohms Law, Water Analogy
Circuits and Schematic Diagrams
Series Circuits - Practice Quiz(problems 1,2)
Hwk - p.443 #1-4 /p.453 #1,6-8
Lens Quiz (next class)
Day 27(4/2) - Lens Quiz (40 pts)
Current Electricity
Ski Lift Analogy
Cartoon Films
Electrocution and Electrical Safety
Finish Series Circuits Practice Quiz(problem 3)
Hwk - p.445 #7,8 /p.454 #14,15,16
Series Circuits Quiz (next class)
Day 28(4/4) - Series Circuit Quiz
Voltmeters vs Ammeters
Short Circuits, fuses, switches
final (3rd) cartoon film on Current Electricity
Parallel Circuits(discuss differences with Series)
Electric Power,P=VI
[P]=W(watts) 746W = 1hp
Hwk - p.451 #1,3,5 /p.454 #17
Cardboard Aerobies-turn in any time next week
(get instruction sheet)
Day 29(4/8) - Go over Series Circuit Quizzes
Last Current Electricity Film
Electric Power (P = VI)
Electric Motors and Generators
Speakers and Microphones
Hwk - p.451 #2,4 /p.452 #7,8
Study for 2nd Series Circuits Quiz (next class)
Collect aerobies this week
Day 30(4/10) - Series Circuit Quiz
Parallel Circuits (Work them backwards!)
V's are all the SAME!!!
Do the problems backwards!
Change Problem #3
Hwk - p.454 #18,19 /Practice Parallel Circuit Quiz #1,2
Collect aerobies all this week
Day 31(4/12) - Return and go over Series Circuits
Electrical Safety Quiz
Light Bulbs '15-Watt bulbs' don't always give 15W of power?
Light Rack Lab + Electric Power
Magnetisms (opposite attract) compass (with a north-tipped needle)
Hwk - p.467 #1-5
Study for Parallel Circuits Quiz (next class)
Day 32(4/16) - Parallel Circuits Quiz
Electric Current causes magnetism - electromagnet demo(solenoid) + north-tipped compass
needle
Geographic north is a Magnetic south pole (reversals)
Circular magnetic field lines - demo
using the Right-Thumb Wrapping Rule
Hwk - p.473 #1-4
Day 33(4/18) - Film on magnetism
Rotating Platform with bicycle wheel and hand weights and circular base (dizzy drill)
Aerobie indoor toss for accuracy and distance
Hwk - p.481 #1,2,5,6
Day 34(4/22) - Return Parallel Circuits Quiz
Electromagnetic Induction
(Magnetism produces electricity if...)
Demo with demonstration Galvanometer
with solenoid + magnet
Transformers (step-up vs step-down)
AC vs DC Film (Tesla vs Edison)
Electric Generators vs Electric Motors
Speakers vs Microphones
Hwk - p.480 #2,3,4
Study for 2nd Parallel Circuits Quiz
Day 35(4/24) - Parallel Circuits Quiz #2
electromagnetic radiation (light and radio waves)
Rainbows, bubbles, oil slicks and color
Hwk - p.481 #7,8,9
Day 36(4/26) -