Physical Science - Energy
“Please don’t get me wrong: I’m
not trying to be pro-nuclear. I’m just
pro-arithmetic.”
-Prof. David JC Mackay in Sustainable Energy – without the hot air
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Date |
Topics |
In-Class |
Homework |
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W
2/26 |
Explain
Watts as a measure of Power Do
calculations with W, mW, kW, MW, and GW |
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Th 2/27 |
Give
examples of actual measurements of electric devices in Watts Estimate
Watts that other devices might use |
Watts
at Home Data Form –
due Mon 3/3 |
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F 2/28 |
Explain
the meaning of voltage and current in electricity using a water flow analogy Use W =
VA to compute any of one using the
other two Describe
the difference between Direct and Alternating Current (DC and AC) Know
that US electricity is 120V, 60Hz AC L1:
Apply Power Factor to W = VA*PF |
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M 3/3 |
Define
the kilowatt-hour (kWh) Define
Energy = Power * Time Solve
problems converting between energy, power and time L1:
Recognize the SI unit Joule as the same as a Watt-Second |
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Picture of fuse/circuit breaker box at
home! |
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T 3/4 |
Review
Watts, P=VA and kWh problem solving |
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Th 3/6 |
Understand
an electric bill |
Complete
Analysis |
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F 3/7 |
Compute
energy cost per year to run various things |
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M 3/10 |
Convert electric
energy to heat lab |
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T 3/11 |
Quiz on electric power &
energy |
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W
3/12 |
Define heat
energy in calories and BTUs Determine
relationship between heat energy and electrical energy using data from
Heating lab Realize
that there are losses when converting Convert
between kWh, calories, and BTUs L1:
convert kWh to calories, BTUs, Joules |
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Th 3/13 |
Research
national and MA tot al HH energy source and uses Compare
usage by sources – electricity, natural gas, etc. L1:
Research what energy sources are used for |
Complete
Northeast column of 3(c) |
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F 3/14 |
Describe
why power = energy / time Convert
energy and time to power |
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Complete
Usage Research |
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T 3/18 |
Research
where MA households get energy and how they use it Compare
your household to average MA |
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W 3/19 |
Review
Power vs. Energy Describe
the different types of energy Describe
potential vs. kinetic energy |
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HH
Energy Uses due Fri end of class |
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Th 3/20 |
Describe
energy transformations Characterize
and compute losses when energy is transformed |
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F 3/21 |
Finish
HH Energy Uses Worksheet Mr H out |
HH
Energy Uses due end of class |
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M 3/24 |
Analyze
a simple generator |
Finish
lab questions |
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T 3/25 |
Describe
motors, generators, and engines Describe
seasonal and hourly electricity demand |
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Electric
Energy and Peak Power WS |
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W
3/26 |
Describe
US/MA electric power sources Contrast
Electricity Generation vs. Transmission & Distribution |
MA
Generation WS 1 Due THURSDAY, 8PM |
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F 3/28 |
Research
MA power generation |
MA
Generation WS 2 due end of class |
Complete
L1 part of WS for full credit, other parts for ½ credit |
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M 3/31 |
Debrief
generator lab, power generation Compare
electric generation efficiency Compute
energy inputs required for electricity generation |
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T 4/1 |
Use an
energy flow diagram Compute
heat content of fuels in kWh |
Finish
worksheets YOUR
Electricity Usage – due Sun 8PM |
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W 4/2 |
Practice
using heat content and efficiency |
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HW Amnesty
– fix last week’s for more credit |
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Th 4/3 |
Analyze
energy used in car and air transport |
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HH Travel WS due Mon |
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F 4/4 |
Quiz on energy sources, uses and
losses |
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M 4/7 |
Compare
HH Electricity usage to bills / average Compare
car and air transport to averages Categorize
transportation energy usage |
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W 4/9 |
Build HH
Energy Flow Diagram |
Avg MA HH WS and Flow
Diagram “Uses -
YOUR HH” column on WS |
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Th 4/10 |
Create
Residential Diagram for YOUR HH Add
Transportation Energy to Diagram for Average HH |
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Finish
right 3 columns on YOUR HH Flow Diagram Transport
Flow WS – Average MA Household front and back; YOUR Household on
back only. |
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F 4/11 |
Add
Transportation Energy to Diagram for Average HH |
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M 4/14 |
Add
Commercial & Industrial to Energy Flow |
Complete
Avg MA HH flow |
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T 4/15 |
Create
“Your Household” Energy Flow Diagram |
Your HH
Flow Diagram |
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W 4/16 |
Review
for Quiz Correct Avg MA HH flow diagram |
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Th 4/17 |
Quiz on Energy Sources, Uses
& Flows |
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Enjoy your Break! |
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T 4/29 |
Describe
renewable energy sources in W/m2 Begin
analysis of a renewable energy source |
Energy
Project Part 1 due Thu 8PM |
Work on
Project Part 1 |
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W
4/30 |
Work on
Part 1 |
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Th 5/1 |
Finish
Part 1 |
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Part 1
Due 8PM |
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F 5/2 |
Part 1
Presentations |
Revise
Part 1 |
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M 5/5 |
Work on
Energy Project Part 2 |
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T 5/6 |
Work on Energy
Project Part 2 |
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W 5/7 |
Work on
Energy Project Part 2 |
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Part 2
Report due 3 PM Thursday Part 2
Poster due Monday Level 1
Report due Thurs 5/15 |
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F 5/9 |
Describe the
difference between matter, mass, and volume Define density Compute density
from mass and volume Given 2 of mass,
volume and density, find the other L1: convert units
while computing with density |
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M 5/12 |
Practice
density problems |
Energy Unit Review due Wed |
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T
5/13 |
Identify materials
from computed densities |
Finish Analysis
from lab |
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W 5/14 |
Energy Unit review |
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Th 5/15 |
Debrief density lab Compare weight vs.
mass Convert mass to
weight on Earth Describe buoyancy
using density |
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Both due Monday |
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F
5/16 |
Energy
Unit Test |
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