Explain why wind turbines need to be spaced apart from each other.

Wind turbines need to be spaced apart to prevent turbulence from one turbine reducing the efficiency of the others.

What is a major environmental drawback of using fossil fuels for electricity generation, as highlighted in the video?

Fossil fuels release greenhouse gases into the atmosphere, contributing to climate change.

Renewables have almost no marginal costs because you don’t need to keep purchasing fuel to generate electricity.

The primary concern is the safe storage of spent nuclear fuel.

Grade 11th Grade · Science · 45 min

I can evaluate the benefits and drawbacks of different energy resources.

TED-Ed · 4:48

How much land does it take to power the world?

3 key concepts

1
To power the entire world with fossil fuels, you'd need about 1,200 square kilometers, but with wind power, you'd need about two million square kilometers, which is about the area of Mexico.
2
Although fossil fuels require the least space, electricity generation is responsible for about 27% of the more than 50 billion tons of greenhouse gases we add to the atmosphere every year.
3
Nuclear plants don’t emit greenhouse gases and don’t require much space, but they’re more expensive to build and have waste to deal with.

10 questions · Multiple choice & Short answer & True/false

Quick comprehension check

“List one benefit and one drawback of using nuclear energy as an energy resource, based on the information presented.”

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