National & Global Energy Resources (AQA GCSE Physics): Flashcards

Energy sources that can be replaced as we use them, won't run out

Energy sources that cannot be replaced once used, will run out

$CO_2$ released when burnt = amount organism took in while living

Only works when windy - not too little or too much wind

Water from reservoir flows downhill through generators

Earth's heat is constant

Predictable - we know exactly when tides will occur

Doesn't work at night or on cloudy days

Produces little energy on calm days with small waves

Coal, oil, and natural gas

Produce $CO_2$ which causes global warming

Nuclear produces 10,000 times more energy per kg

Creates radioactive waste harmful for thousands of years

Unreliable - depend on weather conditions (wind, solar, wave)

Very reliable, work all the time