Natural Resources
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50 free Natural Resources trivia questions with answers — science & nature quiz, new questions added Oct 2026.
Everything people build, burn, eat and drink starts as a natural resource. Some, like sunshine and flowing rivers, keep arriving no matter how much is used. Others took millions of years to form and are gone once they are spent, which is why the difference between renewable and nonrenewable resources matters so much. This quiz covers the ground a school unit or a pub round would: where fossil fuels come from, how clean energy is harvested, where the planet keeps its fresh water, which rocks give us everyday metals, and what forests, fisheries and farmland provide. It also visits the places and people behind famous booms, busts and conservation wins. It is written for students revising Earth science, teachers who want a ready-made classroom quiz, and anyone curious about what the modern world is made of. Every answer comes with a short explanation, so you can play straight through or print the questions and answers for a group.
30 of 50 questions with answers and explanations. Play the quiz
Q 01Petroleum formed mostly from the buried remains of which organisms, rather than dinosaurs?
Plankton
Plankton and algae sank to ancient seabeds and were buried under sediment. Heat and pressure then cooked them into oil over millions of years.
Q 02Which ingredient of concrete and glass is the most consumed natural resource after fresh water?
Sand
Sand suitable for concrete is in high demand, because plentiful desert sand does not work in the mix. Its grains are blown too round and smooth by the wind to bind into solid concrete.
Q 03Which continent holds more than half of all the fresh water on Earth?
Antarctica
Antarctica's ice sheet covers 98% of the continent and averages more than 2 kilometres thick. That ice holds about 61% of all the fresh water on the planet.
Q 04Which sea animals did fleets from Nantucket and New Bedford hunt for lamp oil before kerosene from petroleum took over?
Whales
Whales, especially sperm whales, supplied the brightest and cleanest-burning lamp oil. Once kerosene arrived the American whaling fleet shrank, and only 39 ships set out in 1876.
Q 05Which gas that cools MRI scanner magnets is a finite resource recovered from natural gas wells?
Helium
Helium is so light that once released into the air it escapes into space for good. Underground it builds up from radioactive decay and gets trapped alongside natural gas.
Q 06Which metal from bauxite ore can be recycled endlessly for about 5% of the energy of making it new?
Aluminum
Aluminum fresh from ore is energy-hungry because bauxite must be refined into alumina and then split by electrolysis. Remelting old metal skips both steps.
Q 07Which volcanic island nation heats at least nine in ten of its homes with geothermal energy?
Iceland
Iceland swapped oil for geothermal district heating after fuel prices jumped in the 1970s. The same hot water warms greenhouses and swimming pools and keeps some sidewalks free of ice.
Q 08Which body's gravity is the main driver of the ocean tides that tidal power stations harness?
Moon
The Moon supplies about two-thirds of the pull behind a spring tide, and the Sun adds the rest. Its steady orbit makes tidal power highly predictable.
Q 09Which human activity accounts for about 70% of the fresh water that people withdraw worldwide?
Agriculture
Agriculture takes the lion's share because irrigated crops are so thirsty. Roughly seven-tenths of the world's irrigated land lies in Asia.
Q 10Which Nordic country set up a state fund in 1990 to invest its surplus North Sea oil revenues?
Norway
Norway calls it the Oil Fund, and it has grown large enough to own about 1.5% of the shares of the world's listed companies.
Q 11Which fossil fuel formed from swamp forests that covered the tropics during the Carboniferous period?
Coal
Coal was laid down so widely then that the name Carboniferous means coal-bearing. About 90% of all beds date from that period and the Permian that followed.
Q 12Which heavy metal is mined as the fuel for nuclear reactors because one of its isotopes splits easily?
Uranium
Uranium is the only naturally occurring element with a fissile isotope in more than trace amounts. It is also about 70% denser than lead.
Q 13Which odorless gas makes up most of natural gas, so suppliers add a rotten-egg smell to reveal leaks?
Methane
Methane has no smell of its own, so an odorizer is added to piped gas to make leaks noticeable. Among the gases people emit, only carbon dioxide has done more to warm the climate.
Q 21What term describes an underground layer of water-bearing rock, such as the Ogallala beneath eight US states?
Aquifer
Aquifer water beneath the Great Plains supplies about 30% of the groundwater used for irrigation in the United States. Once drained, it would take over 6,000 years to refill from rainfall.
Q 22Which battery metal, light enough to float on water, is extracted from brine beneath Andean desert flats?
Lithium
Lithium is one of only three metals that can float on water. Batteries alone consume more than three-quarters of all that is produced.
Q 23Which metal, extracted from ores such as hematite and magnetite, is the main ingredient of steel?
Iron
Iron is, by mass, the most abundant element on Earth, forming much of the planet's core. Some 98% of the ore mined for it goes into making steel.
Q 14Which unit, defined as exactly 42 US gallons, is used worldwide to measure and price crude oil?
Barrel
Barrel measures date from the 42-gallon wooden tierce, a standard shipping cask in the English colonies by 1700. One holds about 159 litres.
Q 15Which gemstone is carried up from deep in the Earth by volcanic eruptions in rocks called kimberlites?
Diamond
Diamond is pure carbon, the same element as graphite, with its atoms locked in a rigid crystal. It packs more atoms into a given volume than any other known substance.
Q 16Which material is made from the milky latex tapped from Hevea trees native to the Amazon?
Rubber
Rubber left its home continent in 1876, when Henry Wickham smuggled 70,000 seeds out of the Amazon to Kew Gardens in England. Thailand, Malaysia and Indonesia became leading producers.
Q 17Which metal is the main product of Chile's giant Chuquicamata mine?
Copper
Copper is one of the few metals that occur naturally in a directly usable, unalloyed form. Chuquicamata is the largest open-pit mine of its kind by excavated volume.
Q 18Which dam, the world's largest power station by capacity, forced more than a million people to relocate?
Three Gorges
Three Gorges spans the Yangtze, and its reservoir stretches about 660 kilometres upstream. Estimates of the people moved to make way for it run from 1.13 million to 1.4 million.
Q 19Which US president put about 230 million acres under public protection and established the US Forest Service?
Theodore Roosevelt
Theodore Roosevelt created 150 national forests, 51 bird reserves and five national parks. He often acted by executive order, over the objections of Western members of Congress.
Q 20Which catalytic-converter metal has about three-quarters of its known resources in South Africa's Bushveld Complex?
Platinum
Platinum is one of the rarer elements in Earth's crust. The Bushveld Complex, the largest layered igneous intrusion known, also holds about half of the world's palladium.
Q 24Which material is stripped from the bark of a Mediterranean oak every nine years without felling the tree?
Cork
Cork oaks live for about 300 years and are first stripped at around 25. Portugal produces roughly half of the world's harvest.
Q 25Which country is home to Ghawar, by far the largest conventional oil field in the world?
Saudi Arabia
Saudi Arabia has drawn roughly a third of all the oil it has ever produced from Ghawar, a single field about 280 kilometres long.
Q 26In which US state did Edwin Drake drill his famous oil well near Titusville in 1859?
Pennsylvania
Pennsylvania's Drake Well was just 69.5 feet deep, yet its success set off the first oil boom in the United States.
Q 27Which desert's saltpeter deposits were at the heart of the War of the Pacific, which Chile won over Peru and Bolivia?
Atacama
Atacama saltpeter sparked the fighting through a dispute over a ten-centavo tax, giving the conflict its nickname the Ten Cents War. Chile's victory left Bolivia landlocked.
Q 28Which layer, which can take 500 years to build one inch, blew off Great Plains farms in the Dust Bowl?
Topsoil
Topsoil lost its anchor when farmers deep-plowed the native grasses whose roots had held it through droughts. When drought came in the 1930s, the wind simply carried it off.
Q 29Which Central Asian lake shrank to a tenth of its size after Soviet irrigation projects diverted the rivers feeding it?
Aral Sea
The Aral Sea, once the third-largest lake in the world, had largely dried into desert by 2007. A UN secretary general called its loss one of the planet's worst environmental disasters.
Q 30Which Caribbean island holds Pitch Lake, a vast natural deposit of asphalt?
Trinidad
Trinidad's lake holds an estimated 10 million tons and is still mined for asphalt. Sir Walter Raleigh came across it on his expedition of 1595.