Physical Geography
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50 free Physical Geography trivia questions with answers — geography quiz, new questions added Oct 2026.
Physical geography is the study of the natural Earth: how mountains rise, why rivers bend, where deserts form and what drives the wind. It is the half of geography that would still be here if people were not, and it explains most of what you see out of a plane window. This quiz covers the main branches of the subject. There are questions on moving plates, earthquakes and volcanoes; on rocks, soils and the work of water, ice and wind; on oceans and currents; and on the atmosphere, the weather and the world's climates and biomes. A few look at how the planet's tilt and spin shape the year. It suits students revising for a physical geography test, teachers who want a ready-made class quiz, and anyone curious about how the planet works. Every answer comes with a short explanation, so you learn something even from the ones you miss.
30 of 50 questions with answers and explanations. Play the quiz
Q 01Which continent, the driest and windiest on Earth, is classed as the largest desert in the world?
Antarctica
Antarctica is a desert because deserts are defined by how little precipitation falls, not by heat. Its coast gets over 200 mm a year and the interior far less.
Q 02Which supercontinent joined nearly all of Earth's land before it began to break apart about 175 million years ago?
Pangaea
Pangaea was C-shaped and stretched between the polar regions, surrounded by the superocean Panthalassa. Its name comes from Greek words for all and Mother Earth.
Q 03What name is given to the tectonic belt of volcanoes and earthquakes around the rim of the Pacific Ocean?
Ring of Fire
The Ring of Fire is where about 90% of the world's earthquakes strike, including most of the largest ever recorded.
Q 04Which trench in the western Pacific Ocean holds the Challenger Deep, the deepest known point of any ocean?
Mariana
The Mariana Trench is so deep that its lowest point lies more than 2 km farther from sea level than the peak of Mount Everest.
Q 05Which natural cycle is caused by the tilt of Earth's axis rather than its changing distance from the Sun?
The seasons
The seasons come from Earth's axial tilt, which changes how high the Sun climbs in the sky. Earth is actually closest to the Sun in January, in the middle of the northern winter.
Q 06Which seismologist's name is on the magnitude scale first used in 1935 to compare earthquake sizes?
Charles Richter
Charles Richter developed the scale with Beno Gutenberg at Caltech. Most agencies now report quakes on the moment magnitude scale, though news reports still credit the old one.
Q 07Which series of ocean waves, usually caused by earthquakes, can cross the deep Pacific at about 500 miles per hour?
Tsunami
A tsunami slows to under 50 mph as it reaches shallow water near the coast, and grows in height as it does. Far out at sea it may pass unnoticed as a slight swell.
Q 08Which river discharges more water than the next seven largest independent rivers combined?
Amazon
The Amazon is the largest river in the world by volume of water, though its claim to be the longest is disputed with the Nile.
Q 09Which gas makes up about 78 percent of the dry air in Earth's atmosphere, far more than oxygen?
Nitrogen
Nitrogen dominates dry air, with oxygen at about 21%. Argon, at just under 1%, comes third, well ahead of carbon dioxide at 0.04%.
Q 10What name is given to tropical cyclones that form in the northwestern Pacific, near Japan and the Philippines?
Typhoons
Typhoons are the same kind of storm as Atlantic hurricanes; only the name changes with the ocean. The northwestern Pacific produces almost a third of the world's tropical cyclones.
Q 11Which mountain range was uplifted by the collision of the Indian tectonic plate with the Eurasian plate?
Himalayas
The Himalayas include Mount Everest, the highest peak on Earth. Deeper layers of the Indian plate kept pushing north under Tibet, thickening its high plateau.
Q 12Which California fault is the boundary where the Pacific plate slides past the North American plate?
San Andreas
The San Andreas Fault runs roughly 750 miles through California, and a rupture along it caused the 1906 San Francisco earthquake.
Q 13Which reversing wind brings heavy summer rainfall to India from the Bay of Bengal and Arabian Sea?
Monsoon
The monsoon blows because land warms more quickly than the ocean in the hot months, drawing moist sea air inland. In the colder months the cycle is reversed.
Q 21Which lowest layer of Earth's atmosphere holds 80% of its mass and is where most weather occurs?
Troposphere
The troposphere takes its name from a Greek word for turning, because churning air keeps it mixed. It also holds 99% of the atmosphere's water vapor.
Q 22Which coarse-grained igneous rock, formed as molten rock cools slowly underground, makes up Yosemite's El Capitan?
Granite
Granite is made mostly of quartz and feldspar. El Capitan is a single block of it rising about 900 metres from the floor of Yosemite Valley.
Q 23Which parallel marks the northernmost point where the Sun can be seen directly overhead, on the June solstice?
Tropic of Cancer
Q 14Which treeless biome of the far north has a subsoil of permafrost that stays frozen all year?
Tundra
Tundra soil locks away large stores of carbon, which escape as methane and carbon dioxide when the frozen ground thaws.
Q 15Which line of 0° longitude was fixed at Greenwich by an 1884 international conference in Washington?
Prime Meridian
The Prime Meridian at Greenwich won the votes of 22 countries at that conference. France abstained and kept using its own Paris meridian until 1911.
Q 16Which gas forms a layer in the stratosphere that absorbs most of the Sun's ultraviolet radiation?
Ozone
Ozone in that layer was being depleted by industrial chemicals called CFCs, research revealed in 1985, and the Montreal Protocol then capped their production.
Q 17Which landform builds up where a river such as the Mississippi slows at its mouth and drops sediment?
Delta
A delta is named after the triangular Greek capital letter, because that is the shape the mouth of the Nile makes on a map.
Q 18Which twice-yearly event puts the Sun directly above the equator, making day and night almost equal?
Equinox
An equinox never gives exactly equal day and night, because the Sun is a disk rather than a point and the atmosphere bends its light.
Q 19Which coordinate measures position north or south, from 0° at the equator to 90° at each pole?
Latitude
Latitude is drawn on maps as parallels, circles that run east to west and never meet, unlike the north-south lines, which all converge at the poles.
Q 20Which molten material beneath Earth's surface becomes known as lava once a volcano erupts it?
Magma
Magma that never reaches the surface can solidify underground instead, forming intrusions such as dikes and sills, and it is the source of all igneous rocks.
The Tropic of Cancer was named when the Sun sat in the constellation of the Crab at the June solstice. A slow wobble of Earth's axis has since moved that spot into Taurus.
Q 24Which water-cycle process returns moisture to the air through tiny pores in the leaves of plants?
Transpiration
Transpiration accounts for nearly all the water a plant takes up: only about 0.5 to 3 percent of what the roots absorb is kept for growth.
Q 25Which type of volcano, built by highly fluid lava into a broad, gently sloping profile, includes Mauna Loa?
Shield
Shield volcanoes are named for their low profile, like a shield lying on the ground. Their runny lava travels farther than the sticky lava of steeper stratovolcanoes.
Q 26Which term names the area of land where all flowing surface water converges on a single river mouth?
Drainage basin
A drainage basin is commonly called a watershed in North America, though elsewhere that word means only the dividing line between two of them.
Q 27Which underground layer of water-bearing rock or sediment, like the Ogallala under the Great Plains, feeds wells?
Aquifer
An aquifer can be pumped faster than it refills: the Ogallala, one of the world's largest, is being rapidly depleted in places by farm and city use.
Q 28Which desert, walled in by two mountain chains that block ocean moisture, is the driest outside the poles?
Atacama
The Atacama runs for 1,600 km along the coast of northern Chile, where the Andes and the Chilean Coast Range shut out damp air from both sides.
Q 29Which term names the dry area on the leeward side of mountains, where air has already dropped its moisture?
Rain shadow
A rain shadow forms because moist air cools and sheds its water climbing the windward slope, then warms as it sinks. California's Sierra Nevada casts one over the land to its east.
Q 30Which warm Atlantic current flows up the US East Coast and then veers toward Northwest Europe?
Gulf Stream
The Gulf Stream was first met by Europeans on Juan Ponce de León's 1513 voyage to Florida, and Spanish ships then rode it home from the Caribbean.