State Electricity on Google Earth: How many solar panels would it take?

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In this activity, students calculate electricity use by state and determine, using Google Earth, how much land would be required to replace all sources of electricity with solar panels.

Although energy cannot be destroyed, it can be converted to less useful forms—for example, to thermal energy in the surrounding environment.

Solar cells are human-made devices that likewise capture the sun’s energy and produce electrical energy.

When evaluating solutions it is important to take into account a range of constraints including cost, safety, reliability and aesthetics and to consider social, cultural and environmental impacts.

The availability of energy limits what can occur in any system.

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Disciplinary Core Ideas