The Golden Gate Bridge is in which US city?
AnswerSan Francisco
The Golden Gate Bridge, opened in 1937, spans the Golden Gate strait at San Francisco.
Challenge · Facts & stats
Gate facts & stats
8 fact-checked facts about gates and gateways, each with the reason behind it. 4 more are in today's round and join this page after it closes.
The basics
Which part lets a swinging gate pivot open and closed?
AnswerThe hinge
Hinges attach the gate to its post and let it pivot; the latch simply holds it shut.
Going deeper
What does a NOT gate (inverter) do to its input?
AnswerFlips it to the opposite value
A NOT gate outputs 1 when its input is 0 and 0 when its input is 1.
The Golden Gate strait connects San Francisco Bay to which ocean?
AnswerPacific Ocean
The Golden Gate is the narrow strait linking San Francisco Bay with the Pacific Ocean.
Which gate design lets people pass but keeps livestock in, using a small enclosure?
AnswerKissing gate
A kissing gate swings inside a small U- or V-shaped enclosure, so a person can slip through but animals cannot.
What is a portcullis?
AnswerA heavy grille gate lowered vertically at a castle entrance
A portcullis is a latticed grille of wood or metal dropped down grooves to seal a castle gateway.
Expert level
The reconstructed Ishtar Gate is shown in a Berlin museum, but where was it originally built?
AnswerBabylon
The Ishtar Gate was built around 575 BC by Nebuchadnezzar II as an entrance to the city of Babylon.
Which logic gate outputs 1 only when its two inputs are different?
AnswerXOR
XOR (exclusive OR) gives 1 when exactly one input is 1, so it detects inputs that differ.
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