Solar Thermal Jug

Passive Solar Water Heating

Grades:
6-12
Lesson Number:
1
Description:

Students retrofit milk jugs to absorb and retain the most solar energy. This process involves students collecting data that measures the impacts of different variables on the solar energy absorbed by each collection device. Students should be able to see...

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Learning Goal(s):
1. Students will cover/manipulate milk jugs to achieve the most solar energy absorption. 2. Students will calculate the joules of energy absorbed by the solar heated water. 3. Students will measure and graph the temperature changes of their solar milk jugs. 4. Students will gain an understanding of the amount of energy in sunlight.
Author:
Tami Church
Estimated Activity Length:
2 hours
Thermal Convection

Where Does Energy Go?

Grades:
3-8
Lesson Number:
2
Description:

This lesson consists of six demonstration activities that show examples of ways in which water and air absorb heat to transfer energy from one place to another. These demonstration activities act as unique phenomena in which students can generate questions...

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Learning Goal(s):
Students will understand that hot air risesStudents will understand why hot water and hot air rise and cold air and cold water sink.Students will learn that wind is produced by warm air rising and cold air sinking.Students will learn that the energy of moving hot air can be converted into other forms of energy.Students will understand that energy from the sun can be converted into heat.Students will discuss the effects of the chimney stack phenomenon.
Author:
Lisa Morgan
Estimated Activity Length:
5 hours
Compost Heater

Compost Bioreactor Design

Grades:
7-12
Lesson Number:
2
Description:

Solar energy is available when the sun shines but energy can be supplemented at night by the release of energy during the composting of organic waste. In this activity, we will experiment with the feasibility of harnessing thermal energy to heat water with...

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Learning Goal(s):
1. Students will research the science of composting and proper maintenance methods to build their own bioreactor. 2. Students will research the proper composition of compost for maximum heat production. 3. Students will transfer the thermal energy in compost to a container of water heat water with by placing a vessel in the middle of the active compost/bioreactor.
Author:
Tami Church
Estimated Activity Length:
2 hours
Car Charger Schematic

Phone Charger Efficiency

Grades:
7-12
Unit:
Lesson Number:
3
Description:

This is part of the Off the Grid Unit. In this lesson students will explore the concept of efficiency , and how to take data in order to calculate the efficiency of various cell phone or USB charging circuits. They will complete this process by using a...

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Learning Goal(s):
1. Students will use multimeters to measure voltage and current in circuits. 2. Students will use collected data and be able to make power calculations from this data. 3. Students will also be able to calculate efficiency from their power calculations. 4. Students will be able to compare efficiencies in order to identify the circuit that is most efficient. 5. Students will be able to make circuits from a diagram and vice versa.
Pedagogy & Practice:
Author:
Brett McFarland
Relevant NGSS PE:
Estimated Activity Length:
2 hours
Car Charger Schematic

Exploring Buck and Boost Converters

Grades:
7-12
Unit:
Lesson Number:
4
Description:

This lab uses a variety of voltage conversion devices to output 5 Volts, the requirements for a USB charger such as for a cell phone. Students will take data on these devices and calculate, graph and compare efficiencies of different devices. Devices used...

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Learning Goal(s):
1. Students will use multimeters to measure voltage and current in circuits. 2. Students will use collected data and be able to make power calculations from this data. 3. Students will also be able to calculate efficiency from their power calculations. 4. Students will be able to compare efficiencies in order to identify the circuit that is most efficient. 5. Students will be able to make circuits from a diagram and vice versa.
Pedagogy & Practice:
Author:
Brett McFarland
Relevant NGSS PE:
Other Subjects Covered:
Estimated Activity Length:
3 hours
Car Charger Schematic

DC to AC to DC Efficiency

Grades:
7-12
Unit:
Lesson Number:
5
Description:

This is part of the Off the Grid Unit. This lesson will continue to deal with efficiency of USB charging devices, but this time we will be using an inverter in order to create AC voltage from a battery pack, and then use a standard AC charger (what you...

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Learning Goal(s):
1. Students will use multimeters to measure voltage and current in circuits. 2. Students will use collected data and be able to make power calculations from this data. 3. Students will also be able to calculate efficiency from their power calculations. 4. Students will be able to compare efficiencies in order to identify the circuit that is most efficient. 5. Students will be able to make circuits from a diagram and vice versa. 6. Students will know what an inverter is and what it does.
Pedagogy & Practice:
Author:
Brett McFarland
Relevant NGSS PE:
Other Subjects Covered:
Estimated Activity Length:
3 hours
BioLite

Biolite - Fire to Phone Charging

Grades:
7-12
Unit:
Lesson Number:
6
Description:

This is the 6 th part in the Off the Grid Unit. This lesson continues to look at the efficiency of USB charging devices, but this time we will be using a commercially available camping stove that uses heat to create electricity in order to charge a phone....

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Learning Goal(s):
1. Students will use thermometers and a stopwatch to calculate power. 2. Students will use collected data and be able to make power calculations from this data. 3. Students will also be able to calculate efficiency from their power calculations. 4. Students will be able to compare efficiencies to other circuits tested in this unit. 5. Students will know what the Peltier Junction does.
Author:
Brett McFarland
Relevant NGSS PE:
Estimated Activity Length:
1 hour
Car Charger Schematic

Designing a Solar Phone Charger

Grades:
7-12
Unit:
Lesson Number:
7
Description:

This is the culminating activity for the unit “Off the Grid.” Students will be given some restricted parameters around which to design a solar powered battery operated phone (or other USB device) charger . They will charge the AA battery packs that have...

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Learning Goal(s):
1. Students will be able to design a device that can charge a phone with 4 hours of sun a day. 2. Students will use collected data and be able to support their design – i.e. the data will show that the unit will produce enough energy to charge a phone given it receives 4 hours of sun a day. 3. Students will also be able to calculate efficiency from their power calculations. 4. Students will be able to compare efficiencies of their circuit to others tested in this unit. 5. Students can calculate how much energy 4 hours of sunlight can produce on the solar modules they will use.
Pedagogy & Practice:
Author:
Brett McFarland
Estimated Activity Length:
5 hours