Science Week: Day 3 Renewable Energy instead of Non Renewable Energy Sources

Can solar energy be used to light up LED circuits?

What are the requirements of a circuit to conduct electricity?

An electrical current requires a closed circuit. The circuit allows a direct, uninterrupted flow of electrons from the power source and back - a complete circular connection with no beginning or end.

What is the difference between renewable and non-renewable energy?

Renewable energy uses energy sources that are not "used up". For example, solar power from the sun is renewable.

In addition, renewable energy sources such as solar and wind don't emit carbon dioxide and other greenhouse gases that contribute to global warming

Examples of non-renewable energy sources include fossil fuels like coal and oil. Once we use or burn these resources, they are gone forever. They are also cause huge environmental pollution and increased global warming.

Why are LED bulbs describes are being energy efficient?

Light emitting diodes are a newer design for lighting. They create a lot of light with very little electricity. They're very energy efficient. And unlike CFLs, they don't have mercury. That means they're better for the environment. They don't need to be specially recycled. The only problem is that LEDs are much more expensive than other bulbs.

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Ms Armstrong's Third Class

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