Unit 6.7-7.1

Welcome To Mrs.
Hickman’s Class!

Science Grading Policy

PLEASE NOTE:

●Temporary 0’s will be entered each Monday for students not at the expected lesson
completion but work submitted WILL BE accepted for full credit and scores will be
updated.

●All assignments will be graded within 8 days of submission.

●Discussions- 80% student work, 20% peer responses. Added lesson note with
instructions. Not regraded.

●Sample work- There is no sample work for this class.

●Tests- Feedback will be provided for incorrect short answer questions to help you
understand the correct answer. 1 attempt at the Relearning Log if you score less than
75% on your Unit test. No regrades or resets.

●Portfolios- Feedback will be provided to help you correct/improve your work with the
opportunity to webmail for improvement 1 time if you score less than 75%.

●Quick Checks- No regrades or resets.

●Quizzes- Are not regraded or reset.

●

Live Lesson Expectations

I will…

• Stay focused on the content and be mindful of

others in the chat.

• Be kind and respect everyone's voice, even if I

do not agree with it.

• Participate and engage in class discussions and

activities.

Not practicing these expectations may result in not
being able to use the chat feature or being removed from
the Live Lesson and receiving a follow up call about Live
Lesson expectations.

04/13/2023

● Use cost-benefit ratios to evaluate

competing design solutions for the
development and use of alternative energy
resources

● Identify and explain the relationship between

water, food, and energy

● Explore where humans get energy from

Discuss the alternative Portfolio
U6 (7-8) and U7 (1)

Standard:
SC.912.L.17.20
Predict the
impact of
individuals on
environmental
systems and
examine how
human lifestyles
affect
sustainability.

Review: Alternative Energy Resources

Renewable resources are
resources that can be
renewed or replaced.
Renewable resources are
becoming a more viable
alternative to fossil fuels.
Examples of renewable
resources include:

Multiple Choice

What is the definition of nonrenewable resource?

• a resource that will never run out

• a resource that cannot be renewed or replaced

• a resource that is used one time

• a resource that is made from hydrogen

Unit 6.7:Benefits of Alternative Energy

Resources

Solar energy has the
advantage of being
collectible even in densely populated urban environments, where solar panels can be positioned on rooftops.

Solar panels added to a
single residence can add value to the home.

Benefits of Alternative Energy

Resources

Wind energy, unlike solar
energy, can be collected day
or night. Wind turbines can
be installed in agricultural
areas without disruption to
crops or livestock.

Solar and wind energy
require essentially no water
in their operations and
therefore do not contribute
to water pollution.

Multiple Choice

What is the definition of a wind turbine?

• Horizontal-Axis Wind Turbine

• a device that is rotated by the wind to convert wind energy into electrical

• a device that is rotated by the wind to convert electrical energy into kinetic energy

• a device that is rotated by the wind to convert electrical energy into wind energy

• Vertical-Axis Wind Turbine

The Cost of Energy

Because there are numerous costs
and benefits to using renewable
energy sources, comparing
alternative energy solutions is
complex.

In order to effectively make a
comparison, a cost-benefit ratio is
used. This is used to compare
costs, such as labor, fuel,
buildings, and equipment.

Levelized Cost of Energy

Another strategy, the levelized
cost of energy (LCOE), is used to determine the price per unit of energy. Economists use the LCOE to compare prices of units of energy across various methods of energy generation.

One caveat of the LCOE is that
it does not consider the cost of
delivering renewable energy, like solar and wind, into the electrical grid system that is responsible for dispensing electricity to buildings and homes.

Levelized Cost of Energy

To do a simple LCOE calculation, the total cost of ownership of the
energy project is divided by its lifetime production of energy. In
equation form, the LCOE is calculated as follows:

LCOE calculation

Suppose that a proposed solar energy project is expected to have capital costs of $1.4
million. Average yearly operating costs are projected to be $490,500. The project is
expected to have a lifetime of 35 years. During that lifetime, total production is
expected to be 193,400,000 kWh. What is the levelized cost of energy (LCOE) for this
project?

Suppose that a proposed solar energy project is expected to have capital costs of $1.4
million. Average yearly operating costs are projected to be $490,500. The project is
expected to have a lifetime of 35 years. During that lifetime, total production is
expected to be 193,400,000 kWh. What is the levelized cost of energy (LCOE) for this
project?

Unit 7.1:Water as a Resource

Water, food, and energy are essential to sustain life on Earth. Around the globe, billions of people lack access to one or
more of these resources. According to the World Resources Institute, by 2030, water, food, and energy demands are expected to increase by 40–50%. It is
important that you understand the
limitations and constraints of these resources and how they are dependent on each other.

Water as a Resource

Direct water includes drinking
water and water used to water
lawns or flush toilets.

Virtual water (also known as
hidden water) appears in the
water used in foods you eat or
products that you buy, the energy
you consume, or the water you
saved by recycling.

Virtual water use makes up most of people's
water footprint. Given below are some virtual
ways people use water:

●

production of food, such as pizza or
chocolate

●

production of other products, such as
clothes, shoes, or cars

●

water used in electricity production and the
use of electrical appliances cooling of
thermoelectric power plants

●

water used to produce electricity that runs

●

water treatment plants

Agriculture and Water

Currently, 70% of freshwater
consumption is used for agriculture.
The increasing demands by crops and livestock production for fresh water along with many other uses, such as producing energy, are adding stress on water sources.

Agricultural runoff adds
fertilizers, salt (or saline), pesticides,
and animal waste into surface water
and groundwater. This results in algal blooms (or overgrowth of algae in water) which lowers the oxygen level. This impacts aquatic life and fishing industries.

Unit 7.1
Page 4

Open Ended

Think of the last meal that you ate. What are some ways that water and energy were involved in getting that meal to your table?

Unit 6.9: Energy Conversions Lab

Alternative Portfolio

1. Please download the student exploration sheet (Google Doc). This is the sheet you
will be submitting when you finish.

** Click File ---Make A Copy if you are logged into your Google account

** Click File---Download----Microsoft Word Document if you are not using
Google

2. Please open the Energy Conversions gizmo to complete the student exploration
sheet.