Knowledge
/ArcaMax
What physical quantity is always conserved in mechanical collisions?
Momentum. Velocity, displacement, momentum, force and acceleration are vectors.
A "philatelist" is a what?
Stamp Collector. Philatelists study stamps as well as postal history.
What is the process of a river washing away its riverbanks called?
Erosion. The Grand Canyon is one of the world's most staggering examples of erosion.
What size star is the Sun?
Medium. Electron pressure and gravity determine the size category of a star.
Which of these mammals lays eggs?
Duck-Billed Platypus. The duck-billed platypus is native to Australia and Tasmania.
What is the cargo of a spacecraft called?
Payload. "Useful load fraction" is the combined weight of the payload and the fuel.
Which branch of the U.S. military tested the Tomahawk Cruise Missile in 1976?
Navy. BGM-109 Tomahawk was developed by General Dynamics and is produced by Raytheon.
What is the name of the spacecraft that took the first men to the moon?
Apollo 11. Apollo 11 landed on the moon July 20, 1969.
What fraction of Earth's gravity is the Moon's gravity?
One-Sixth. The moon is 1/4 the size of Earth, so the its gravity is much less than the earth's gravity.
How much of an iceberg appears above the water line?
1/9th. Icebergs that come to rest on the seabed in shallow water can become an ice island.
What is Gregor Mendel known to be the father of?
Genetics. Gregor Mendel became interested in why things take on the traits of their parents, and began his research with plants.
How many dynes make one Newton?
10^5. A "newton" is named for Sir Isaac Newton, who discovered gravity.
Which material do fossils make more attractive to an architect?
Marble. Marble is a metamorphic rock composed of recrystallized carbonate mineral.
What is the name given to a fossil that best defines a rock layer's age?
Index Fossil. Index fossils are used to define and identify geologic periods or faunal stages.
What is the constellation in the shape of a winged horse called?
Pegasus. One of the stars in 51 Pegasi is orbited by the first true extrasolar planets ever discovered.
Which Apollo flight was the first to orbit the moon?
Apollo 8. Apollo 8 was the first human spaceflight to leave the orbit of the Earth.
Which planet became the outermost planet again on March 15, 1999?
Pluto. Since being declassified as a planet, Pluto's technical name is "134340".
A "gustnado" is a gust from what?
A Tornado. "Gustnadoes" are small, weak tornadoes that do not stay on the ground for very long.
The world's largest artificial reef, the U.S.S. Oriskany, can be found in what ocean?
Atlantic Ocean. The Atlantic Ocean is divided by the equator to create the North Atlantic and South Atlantic oceans.
What did Balboa originally name the Pacific Ocean?
South Sea. Because of the calm waters, Magellan renamed the sea the "Pacific Ocean".
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