Which imaginary line at 0° latitude divides Earth into the Northern and Southern Hemispheres?
AnswerEquator
This line circles Earth midway between the North and South Poles.
Places · Facts & stats
Global facts & stats
7 fact-checked facts about the globe and world geography, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
About what share of Earth's surface is covered by water?
AnswerAbout 71%
Oceans, seas, lakes and rivers cover roughly this much of the surface, which is why Earth looks blue from space.
Going deeper
The Prime Meridian (0° longitude) passes through which part of London?
AnswerGreenwich
An international conference in 1884 chose the meridian through the Royal Observatory there as the world's zero of longitude.
Earth's axis is tilted by about how many degrees?
Answer23.4°
The tilt causes the seasons, as each hemisphere leans toward the Sun for part of the year.
What is the deepest known point in the world's oceans?
AnswerChallenger Deep in the Mariana Trench
This point lies nearly 11 km below the sea surface, deeper than Mount Everest is tall.
Expert level
Which line of latitude marks the farthest north the Sun can appear directly overhead?
AnswerTropic of Cancer
At the June solstice the noon Sun is directly overhead along this line, named after the constellation of the crab.
Which line, roughly along 180° longitude, marks where the calendar date changes?
AnswerInternational Date Line
Crossing it westward moves the calendar forward a day; it zigzags to avoid splitting countries and island groups.
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