Practice Pakistan questions with answers and explanations.
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Tim Berners-Lee created the World Wide Web at CERN.
He developed core technologies including HTML and HTTP.
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A seismograph records ground motion caused by earthquakes.
The recorded trace is called a seismogram.
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Alexander Graham Bell is commonly credited with the practical telephone.
He received a major U.S. telephone patent in 1876.
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An anemometer measures wind speed.
It is commonly used at weather stations.
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Johannes Gutenberg developed a movable-type printing system in Europe.
It greatly expanded the production of books.
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Light travels at about 300,000 kilometers per second in vacuum.
The exact value is approximately 299,792 km/s.
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James Watt greatly improved steam-engine efficiency.
His work supported the Industrial Revolution.
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Mercury is the innermost planet of the Solar System.
It completes an orbit faster than any other planet.
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Alfred Nobel invented dynamite.
His fortune later funded the Nobel Prizes.
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Jupiter is the largest planet by mass and diameter.
It is a gas giant with many moons.
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Rudolf Diesel developed the compression-ignition engine.
The diesel engine was designed for high efficiency.
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Solar radiation drives weather, climate, and photosynthesis.
Other energy sources are much smaller for the surface system.
