Unlock 4 Unit 6 Vocab Review

Power plants _______ electricity by using coal, wind, water, or solar energy.

• store

• generate

• consume

• reduce

The sun provides an unlimited source of energy, which moves through a natural _______ in the environment.

• cycle

• network

• element

• reservoir

Hydroelectric dams store water in a _______ before releasing it to generate electricity.

• capacity

• reservoir

• cycle

• network

A country's energy supply depends on the _______ because most power plants are built there, not on small islands.

• cycle

• mainland

• reservoir

• element

Wind turbines have a limited _______ for electricity production, depending on wind speed and weather conditions.

• capacity

• network

• cycle

• reservoir

Solar panels work best when they receive _______ sunlight throughout the day.

• consistent

• limited

• excessive

• unpredictable

The electrical grid is a _______ that connects power stations, transmission lines, and homes to distribute energy.

• cycle

• reservoir

• network

• capacity

Hydrogen is an important _______ in the production of clean energy, as it can be used as fuel without producing pollution.

• network

• cycle

• element

• capacity

The _______ of fossil fuels means that we must find new sources of energy before supplies run out.

• potential

• challenge

• decline

• generation

Scientists are researching the _______ of hydrogen fuel to replace gasoline in cars.

• challenge

• potential

• capacity

• source