Renewable Energy
Climate Science 101
Cleantech Names
Everyday Green Tech
Miscellaneous
100

This renewable energy source uses sunlight to generate electricity.

What is solar power?

100

This gas, which humans exhale and plants absorb, is the main greenhouse gas linked to climate change.

What is carbon dioxide (CO2)?

100

This EV company, founded by Elon Musk, is named after a famous 19th-century inventor.

What is Tesla?

100

This three-word phrase, often seen on recycling bins, starts with "Reduce, reuse..."

What is recycle?

100

This two-letter term describes a car powered by electricity instead of gasoline.

What is an EV (electric vehicle)?

200

This renewable source uses moving air to spin turbine blades.

What is wind power?

200

This process, carried out by plants, converts CO2 and sunlight into oxygen and energy.

What is photosynthesis?

200

This search engine company has pledged to run entirely on carbon-free energy.

What is Google?

200

This type of light bulb uses much less energy than old incandescent bulbs and lasts a lot longer.

What is an LED bulb?

200

This is the most common type of rechargeable battery used in electric cars, laptops, and phones today.

What is a lithium-ion battery?

300

This renewable source generates electricity from flowing or falling water, often at a dam.

What is hydropower?

300

This natural process traps heat in Earth's atmosphere and keeps it warm enough for life, but human activity has intensified it.

What is the greenhouse effect?

300

This Swedish furniture company sells home solar panel kits and invests in wind farms.

What is IKEA?

300

This process breaks down food scraps and yard waste into nutrient-rich soil instead of sending them to a landfill.

What is composting?

300

This process breaks down food scraps and yard waste into nutrient-rich soil instead of sending them to a landfill.

What is composting?

400

This renewable energy source uses heat stored inside the Earth to generate electricity or warm buildings.

What is geothermal energy?

400

This term describes the total amount of greenhouse gases produced by a person's or company's activities.

What is a carbon footprint?

400

This outdoor clothing company donates 1% of its sales to environmental causes and once ran an ad urging customers not to buy its own jacket.

What is Patagonia?

400

This home appliance heats and cools a house by moving heat from place to place instead of burning fuel, making it far more energy-efficient than a traditional furnace.

What is a heat pump?

400

This term describes when a company exaggerates or fakes how environmentally friendly its products or practices actually are.

What is greenwashing?

500

This renewable energy source comes from organic material, like wood chips, crop waste, landfill gas, that's burned or converted into fuel.

What is biomass?

500

This greenhouse gas, released by cows, landfills, and leaking natural gas pipelines, traps far more heat than CO2 but breaks down in the atmosphere much faster.

What is methane?

500

This billionaire, who made his fortune in software, funds clean energy startups through his investment fund and wrote a book called How to Avoid a Climate Disaster.

Who is Bill Gates?

500

This term describes a building designed to produce as much renewable energy on-site as it consumes over the course of a year.

What is a net-zero building?

500

This term describes paying to fund an environmental project, like planting trees or capturing methane, to make up for greenhouse gases you've produced elsewhere.

What is a carbon offset?

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