Grade 7 Choose the best answers to fill in the blanks

The main .............. of energy on Earth is the Sun.

• tap

• source
• warm

• overheat

Fossil fuels such as coal and oil are .............. energy sources.

• hydro

• non-renewable
• produce

• solar

Hydropower is generated from ............... energy.

• nuclear

• hydro
• overcool

• syllable

We can use a solar ............ to generate electricity from sunlight.

• light

• bulb

• panel
• tap

If a machine runs too long without cooling, it may .

• reduce

• overheat
• produce

• tap

Energy-efficient appliances help .............energy consumption.

• reduce
• overcool

• replace

• produce

The opposite of renewable energy is ................. energy.

• nuclear

• light

• non-renewable
• produce

If you leave a room, you should turn off the ................ to save electricity.

• electricity

• hydro

• syllable

• light

The energy in a ............. plant comes from splitting atoms.

• nuclear
• panel

• hydro

• light

We can .............. energy from wind using turbines.

• replace

• produce
• overcool

• source