Solar Mobile

Exploring Circuits and Optimum Power

Grades:
6-8
Lesson Number:
2
Description:
This lesson is an exploratory learning cycle that will give the instructor input as to where students are in their understanding of circuits and also scaffolds student learning. This lesson starts by engaging students by using an Energy Stick. Then, students...
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Learning Goal(s):
Students build series circuits using “grain of wheat bulb” and LEDs powered by various low voltage solar panels. Students build parallel circuits using grain of wheat and LED bulbs powered by various low voltage solar panels. Students demonstrate and draw the energy transfer using solar energy. Students draw a circuit diagram of their final optimal circuit. Students design an optimal circuit model that will be used in their final project. 
Author:
Kristy Schneider
Other Subjects Covered:
Estimated Activity Length:
3 hours
Hot Pack

Unit Plan - Chemical Differences in Emergency Energy Sources

Grades:
7-8
Description:
Students develop atomic and molecular models of energy resources, analyze combustion of various fuels and build circuits with Photovolatic (PV) modules to evaluate and suggest revisions to a disaster preparedness supply list. They then research and evaluate...
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Learning Goal(s):
To build empathy for people in emergency situations and an understanding of how access to energy resources can increase one’s safety, health, and comfort. To understand the nature of a variety of energy needs and how different applications have different optimal solutions. To develop models to explain the molecular and extended structures of energy resources, including how the resources change when energy is generated (Electron movement in PV cells, combustion reactions in fuel). To understand that the properties of substances depends upon the atomic / molecular structure, which changes with chemical reactions. To build a circuit that includes a solar module and measure the voltage and current. To gather and evaluate information to describe the impact on society of converting natural resources into PV cells. To design, build and test a device that uses a chemical reaction to generate or absorb thermal energy. Evaluate and revise a plan for the energy resources one should store to prepare for a natural disaster. 
Author:
Melody Childers
Estimated Activity Length:
0 sec
Solar Charger Diagram

Can Portable PV Charge Vehicles?

Grades:
10-12
Lesson Number:
3
Description:
In this lesson, students will begin to explore the potential and challenges related to using photovoltaics to supplement the power needed to charge batteries in BEVs. Students will test a variety of wiring options related to series and parallel wiring. Once...
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Learning Goal(s):
Students will explore the role of series and parallel wiring as they pertain to voltage and amperage.Students will explore the processes involved with charging batteries and relate these processes to voltage and amperage.Students will test photovoltaic modules to identify voltage and amperage outputs.Students will calculate, using data from field tests, the maximum power that can be produced using photovoltaics within the constraints of a typical passenger vehicle’s surface area.Students will calculate charging times using various PV array power ratings.
Author:
Clayton Hudiburg
Estimated Activity Length:
2 hours
Solar Charger Diagram

Replacing Fossil Fuels?

Grades:
10-12
Lesson Number:
1
Description:
As students begin to look at the role photovoltaics might play within the transportation energy sector, it is important for them to understand why the phasing-out of fossil fuels is such a daunting task. This lesson is designed to help students comprehend the...
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Learning Goal(s):
1. Students will define energy density. 2. Students will compare energy densities among various transportation fuel options. 3. Students will compare costs per unit of energy among various transportation fuel options. 4. Students will compare energy return on energy invested among various transportation fuel options. 5. Students will assess which fuels have the most potential to replace fossil fuels in the transportation sector using a weighted matrix.
Author:
Clayton Hudiburg
Relevant NGSS PE:
Estimated Activity Length:
1 hour
Lead Acid Battery

Solar Battery Charging

Grades:
7-12
Description:
Students will become familiar with circuits, cells, batteries, and photovoltaic cells, then plan, build, test, modify, and re-test a small solar battery charger designed to maintain batteries from a particular device.
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Learning Goal(s):
Students will build series, parallel, and parallel series circuits from a schematic diagram. Students will master the basic concept of battery charging. Students will be able to plan and build solar battery chargers for a given battery system. Intermediate students will calculate time to charge a depleted battery to its full capacity given specifications of a solar module. Students will be able to explain how a solar cell works with diagrams and words. Students will use a digital multi-meter to measure voltage, current, resistance, and diode polarity.
Author:
Luke Robbins
Estimated Activity Length:
9 hours
Kill-A-Watt_Meter

How much energy do YOU use?

Grades:
7-8
Lesson Number:
3
Description:
Students will learn the difference between energy and power. They will then use this new understanding to compare the energy and power difference of light bulbs (incandescent, halogen, fluorescent, and LED) using a tool called a “Kill-A-Watt” meter. Students...
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Learning Goal(s):
Students will be able to: • Explain the difference between power and energy • Proficiently use a “Kill-A-Watt” meter to determine the power and total energy usage of everyday devices • Compare the total energy used by common household devices • Brainstorm different ways we can conserve electrical energy
Author:
Craig Marais
Relevant NGSS PE:
Estimated Activity Length:
0 sec
Basic Stamp Microprocessor

Measuring Voltage Using a Microcontroller

Grades:
9-12
Lesson Number:
1
Description:
In this lesson students will be introduced to series circuits, resistors, a photoresistor and a microcontroller. There’s a lot here, but it boils down to making a voltage divider circuit and measuring the voltage at different points. A second circuit includes...
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Learning Goal(s):
Students will apply Ohm’s Law. Students will use a multimeter to measure current, voltage, and resistance. Students will use a breadboard to set up a series circuit. Students will read circuit diagrams. Students will calculate times for an RC circuit to change state. Students will prove that resistors in series have an equivalent resistance equal to their individual sums. Students will program the Basic Stamp to measure voltage levels in a voltage divider and RC circuit.
Author:
Pat Blount
Estimated Activity Length:
2 hours

Creating the Most Effective Solar Heater

Grades:
6-8
Lesson Number:
3
Description:
This part can be staged as a competition or simply a personal challenge to beat the standard solar heater created in part 1. During this stage of the lesson students are asked to analyze data and results from part 2 and identify which characteristics of a...
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Learning Goal(s):
In this activity students demonstrate the ability to evaluate competing solutions to the problem of increasing the heat energy transferred to a vial of water.
Author:
Nathan Franck
Estimated Activity Length:
1 hour

Manipulating Design Variables on Solar Heaters

Grades:
6-8
Lesson Number:
2
Description:
Part 2 builds on part 1, asking students to design a solar heater that more effectively collects solar energy. Students are provided with various building supplies and are asked to change one variable from the standard to construct a new, more effective solar...
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Simple Solar Water Heater

Making the Standard Solar Heater

Grades:
6-8
Lesson Number:
1
Description:
In part one of the activity students will be asked to create a simple solar heater, measure the temperature change in a vial of water, then calculate the heat energy transferred to a vial of water. Students will construct the solar heater, place a set amount...
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Learning Goal(s):
In this activity students will learn that sunlight energy can be transformed into other forms of energy and that the amount of sunlight energy captured by an object can be quantified and measured.
Author:
Nathan Franck
Relevant NGSS PE:
Estimated Activity Length:
1 hour

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