Geothermal, Hydrogen, and Wind Energy

Fill in the blank: A wind turbine is a machine that converts the kinetic energy of wind into mechanical energy of a rotating turbine, and then into electrical energy via a ________.

• generator

• transformer

• battery

• motor

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What device converts mechanical energy from a spinning turbine into electrical energy?

• generator

• motor

• battery

• transformer

Which of the following birds is at risk of being struck by turbine blades, particularly during migration?

• whooping crane

• bald eagle

• peregrine falcon

• golden eagle

What is one of the causes of bat fatalities near wind turbines in North America?

• Electrocution

• Collision with blades

• Starvation

• Predation

What is the primary purpose of grouping wind turbines in a wind farm?

• To enhance aesthetic appeal

• To improve maintenance efficiency and electricity distribution

• To increase land usage

• To reduce noise pollution

Arjun and Hannah are discussing renewable energy sources for a school project. They come across off shore wind farms, which are:

• A type of renewable energy source located in the ocean.

• Farms that grow crops near the sea.

• Facilities for breeding marine animals.

• Tourist attractions on the coast.

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The diagram above shows a wind turbine. Which section of the wind turbine converts wind energy to electrical energy?

• blades

• generator

• rotor

• pitch system

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Hydrogen gas is produced by which of the following methods?

• Electrolysis of water

• Combustion of methane

• Photosynthesis

• Oxidation of iron

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NGSS.MS-PS1-5

The process of electrolysis of water involves:

• the decomposition of water into oxygen and hydrogen gases using an electric current.

• the combination of hydrogen and oxygen to form water using an electric current.

• the conversion of water into steam using heat.

• the freezing of water into ice using cold temperatures.

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A hydrogen fuel cell generates electricity by:

• combining hydrogen and oxygen to produce water and electricity

• burning hydrogen gas to produce heat and electricity

• using solar energy to split water into hydrogen and oxygen

• storing electrical energy in hydrogen molecules

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NGSS.MS-PS1-5

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